deficiency prejudiced defense (California) · Go Syfert
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deficiency prejudiced defense in California

59 California opinions name it 2 courts 1995–2026 45 in the last five years

The cases below were cited by California courts in a sentence that names this issue. Sides come from how each citing opinion treated the case (Syfertize flag on that citation), so a case can appear on both: that is where the law is contested. A red or yellow chip is the case's own overall treatment.

Followed or applied (27)

CaseFollowedCited
Strickland v. Washingtongreen
scotus · 1984 · cited in 33 California opinions naming this issue, 2014–2026
2 sentences

2026To demonstrate ineffective assistance of counsel, Anand “‘must show that counsel’s performance was deficient, and that the deficiency prejudiced the defense.’” (People v. Johnsen (2021) 10 Cal.5th 1116, 1165 (Johnsen); Strickland v. Washington (1984) 466 U.S. 668, 687 .) “On direct appeal, a finding of deficient performance is warranted where ‘(1) the record affirmatively discloses counsel had no rational tactical purpose for the challenged act or omission, (2) counsel was asked for a reason and failed to provide one, or (3) there simply could be no satisfactory explanation.’” (Johnsen, at p.

2026To assist this court in its review, counsel identified the following issue: “Was defense counsel ineffective by failing to request bifurcation of [McClay’s] prior convictions under Vehicle Code section 23152 subdivision (a)?” To demonstrate ineffective assistance of counsel, a defendant “must show that counsel’s performance was deficient, and that the deficiency prejudiced the defense.” (Wiggins v. Smith (2003) 539 U.S. 510, 521 , citing Strickland v. Washington (1984) 466 U.S. 668, 687 (Strickland).) To establish 1 All further undesignated statutory references are to the Penal Code. 3 prejudi

2133
Wiggins v. Smith, Wardengreen
scotus · 2003 · cited in 20 California opinions naming this issue, 2014–2026
2 sentences

2026To assist this court in its review, counsel identified the following issue: “Was defense counsel ineffective by failing to request bifurcation of [McClay’s] prior convictions under Vehicle Code section 23152 subdivision (a)?” To demonstrate ineffective assistance of counsel, a defendant “must show that counsel’s performance was deficient, and that the deficiency prejudiced the defense.” (Wiggins v. Smith (2003) 539 U.S. 510, 521 , citing Strickland v. Washington (1984) 466 U.S. 668, 687 (Strickland).) To establish 1 All further undesignated statutory references are to the Penal Code. 3 prejudi

2025Such proof must satisfy two distinct but equally crucial components: “A [defendant] must show that counsel’s performance was deficient, and that the deficiency prejudiced the defense.” (Wiggins v. Smith (2003) 539 U.S. 510, 521 (Wiggins), italics added; Buck v. Davis (2017) 580 U.S. 100 , 118 (Buck); Strickland v. Washington (1984) 466 U.S. 668, 687 (Strickland).) Both components of this test “are mixed questions of law and fact subject to our independent review.” (In re Gay (2020) 8 Cal.5th 1059 , 1073 (Gay).) As to the first component, the test is not satisfied by asserting formulaic or conc

1020
People v. Johnsengreen
cal · 2021 · cited in 27 California opinions naming this issue, 2021–2026
2 sentences

2026To demonstrate ineffective assistance of counsel, Anand “‘must show that counsel’s performance was deficient, and that the deficiency prejudiced the defense.’” (People v. Johnsen (2021) 10 Cal.5th 1116, 1165 (Johnsen); Strickland v. Washington (1984) 466 U.S. 668, 687 .) “On direct appeal, a finding of deficient performance is warranted where ‘(1) the record affirmatively discloses counsel had no rational tactical purpose for the challenged act or omission, (2) counsel was asked for a reason and failed to provide one, or (3) there simply could be no satisfactory explanation.’” (Johnsen, at p.

2026To prevail on a claim of ineffective assistance of counsel, Tindle “ ‘must show that [his] counsel’s performance was deficient, and that the deficiency prejudiced the defense.’ [Citations.] On direct appeal, a finding of deficient performance is warranted where ‘(1) the record affirmatively discloses counsel had no rational tactical purpose for the challenged act or omission, (2) counsel was 12 asked for a reason and failed to provide one, or (3) there simply could be no satisfactory explanation.’ [Citation.] ‘[W]here counsel’s trial tactics or strategic reasons for challenged decisions do not

627
In re Gaygreen
cal · 2020 · cited in 19 California opinions naming this issue, 2020–2025
2 sentences

2025We are not persuaded. “ ‘An ineffective assistance claim has two components: A [defendant] must show that counsel’s performance was deficient, and that the deficiency prejudiced the defense.’ ” (In re Gay (2020) 8 Cal.5th 1059 , 1073; see Strickland v. Washington (1984) 466 U.S. 668, 687 (Strickland).) Counsel’s 9 performance was deficient if “it fell below an objective standard of reasonableness under prevailing professional norms.” (People v. Mai (2013) 57 Cal.4th 986, 1009 .) The defense was prejudiced if there is “a reasonable probability that, but for counsel’s deficient performance, the

2025(In re Gay (2020) 8 Cal.5th 1059 , 1073 [“ ‘An ineffective assistance claim has two components: A petitioner must show that counsel’s performance was deficient, and that the deficiency prejudiced the defense.’ ”].) 10 to instructions on the lesser included offense of voluntary manslaughter if evidence of provocation or imperfect self-defense, which would support a finding ‘that the offense was less than that charged,’ is lacking.” (People v. Rios (2000) 23 Cal.4th 450, 463, fn. 10 .) Second, as explained above, there was insubstantial evidence of heat of passion; therefore, the trial court did

619
Harrington v. Richtergreen
scotus · 2011 · cited in 4 California opinions naming this issue, 2021–2022
2 sentences

2022(Wiggins v. Smith (2003) 539 U.S. 510, 521 (Wiggins), italics added; see Strickland v. Washington (1984) 466 U.S. 668, 687 (Strickland).) Both components “are mixed questions of law and fact subject to our independent review.” (In re Gay (2020) 8 Cal.5th 1059, 1073 (Gay).) “On direct appeal, a finding of deficient performance is warranted where ‘(1) the record affirmatively discloses counsel had no rational tactical purpose for the challenged act or omission, (2) counsel was asked for a reason and failed to provide one, or (3) there simply could be no satisfactory explanation.’ [Citation.] ‘[W

2021Judicial review of counsel’s performance is deferential; to establish deficient performance, the defendant ‘must overcome the presumption that, under the circumstances, the challenged action “might be considered sound trial strategy.”’” (In re Gay, supra, 8 Cal.5th at p. 1073 ; Harrington v. Richter (2011) 562 U.S. 86, 105 [“standard for judging counsel’s representation is a most deferential one”]; Bell v. Cone (2002) 535 U.S. 685, 702 .) Defendant’s “burden in this regard ‘is difficult to carry’ in this case, because this is a direct appeal and the record does not disclose the reason for coun

44
Bobby v. Van Hookgreen
scotus · 2009 · cited in 4 California opinions naming this issue, 2015–2021
2 sentences

2021“An ineffective assistance claim has two components: A [defendant] must show that counsel’s performance was deficient, and that the deficiency prejudiced the defense.” (Wiggins v. Smith (2003) 539 U.S. 510, 521 (Wiggins); Strickland v. Washington (1984) 466 U.S. 668, 687-696 (Strickland).) Both “are mixed questions of law and fact subject to our independent review.” (In re Gay (2020) 8 Cal.5th 1059, 1073 .) “There are countless ways to provide effective assistance [and] [e]ven the best criminal defense attorneys would not defend a particular client in the same way.” (Strickland, supra, 466 U.S

2021Legal Background “An ineffective assistance claim has two components: A [defendant] must show that counsel’s performance was deficient, and that the deficiency prejudiced the defense.” (Wiggins v. Smith (2003) 539 U.S. 510, 521 (Wiggins); Strickland v. Washington (1984) 466 U.S. 668, 687 (Strickland).) Both “are mixed questions of law and fact subject to our independent review.” (In re Gay (2020) 8 Cal.5th 1059, 1073 .) Regarding the deficient performance component, “[t]here are countless ways to provide effective assistance [and] [e]ven the best criminal defense attorneys would not defend a p

44
People v. Williamsgreen
cal · 1988 · cited in 4 California opinions naming this issue, 2023–2026
2 sentences

2026To assist this court in its review, counsel identified the following issue: “Was defense counsel ineffective by failing to request bifurcation of [McClay’s] prior convictions under Vehicle Code section 23152 subdivision (a)?” To demonstrate ineffective assistance of counsel, a defendant “must show that counsel’s performance was deficient, and that the deficiency prejudiced the defense.” (Wiggins v. Smith (2003) 539 U.S. 510, 521 , citing Strickland v. Washington (1984) 466 U.S. 668, 687 (Strickland).) To establish 1 All further undesignated statutory references are to the Penal Code. 3 prejudi

2025To demonstrate ineffective assistance of counsel, a defendant “must show that counsel’s performance was deficient, and that the deficiency prejudiced the defense.” (Wiggins v. Smith (2003) 539 U.S. 510, 521 , citing Strickland v. Washington (1984) 466 U.S. 668, 687 (Strickland).) To establish prejudice, “[t]he defendant must show that there is a reasonable probability that, but for counsel’s unprofessional errors, the result of the proceeding would have been different.” (Strickland, at p. 694.) Further, the defendant “must carry his burden of proving prejudice as a ‘demonstrable reality,’ not

24
People v. Centenogreen
cal · 2014 · cited in 3 California opinions naming this issue, 2020–2023
2 sentences

2023A more apt description of the transgression is prosecutorial error. [Citation.]’” (People v. Centeno (2014) 60 Cal.4th 659 , 666–667 (Centeno).) “To demonstrate ineffective assistance of counsel, [defendant] ‘must show that counsel’s performance was deficient, and that the deficiency prejudiced the defense.’ [Citations.] On direct appeal, a finding of deficient performance is warranted where ‘(1) the record affirmatively discloses counsel had no rational tactical purpose for the challenged act or omission, (2) counsel was asked for a reason and failed to provide one, or (3) there simply could

2023It is particularly difficult to prevail on an appellate claim of ineffective assistance.” (People v. Mai (2013) 57 Cal.4th 986, 1009 ; accord, People v. Brand (2021) 59 Cal.App.5th 861 , 872.) To show prejudice, the defendant must demonstrate a “‘reasonable 25 probability that, but for counsel’s unprofessional errors, the result of the proceeding would have been different.’” (People v. Centeno (2014) 60 Cal.4th 659, 676 ; see Tilley, at p. 778.) “‘If it is easier to dispose of an ineffectiveness claim on the ground of lack of sufficient prejudice . . . that course should be followed.’” (Tilley

23
In re Longgreen
cal · 2020 · cited in 2 California opinions naming this issue, 2022–2025
2 sentences

2025Such proof must satisfy two distinct but equally crucial components: “A [defendant] must show that counsel’s performance was deficient, and that the deficiency prejudiced the defense.” (Wiggins v. Smith (2003) 539 U.S. 510, 521 (Wiggins), italics added; Buck v. Davis (2017) 580 U.S. 100, 118 (Buck); see Strickland v. Washington (1984) 466 U.S. 668, 687 (Strickland).) Both components of the test “are mixed questions of law and fact subject to our independent review.” (In re Gay (2020) 8 Cal.5th 1059, 1073 (Gay); In re Long (2020) 10 Cal.5th 764, 774 (Long).) As to the first component, the const

2022Ineffective Assistance of Counsel “To demonstrate ineffective assistance of counsel,” a defendant “‘must show that counsel’s performance was deficient, and that the deficiency prejudiced the defense.’” (People v. Johnsen (2021) 10 Cal.5th 1116, 1165 ; see In re Long (2020) 10 Cal.5th 764, 773 [defendant must show counsel’s action or 14 omission “‘fell below an objective standard of reasonableness’ [citations] in light of ‘the professional norms prevailing when the representation took place’” and “‘a reasonable probability that, but for counsel’s unprofessional errors, the result of the proceed

22
Buck v. Davisgreen
scotus · 2017 · cited in 2 California opinions naming this issue, 2025–2025
2 sentences

2025Such proof must satisfy two distinct but equally crucial components: “A [defendant] must show that counsel’s performance was deficient, and that the deficiency prejudiced the defense.” (Wiggins v. Smith (2003) 539 U.S. 510, 521 (Wiggins), italics added; Buck v. Davis (2017) 580 U.S. 100 , 118 (Buck); Strickland v. Washington (1984) 466 U.S. 668, 687 (Strickland).) Both components of this test “are mixed questions of law and fact subject to our independent review.” (In re Gay (2020) 8 Cal.5th 1059 , 1073 (Gay).) As to the first component, the test is not satisfied by asserting formulaic or conc

2025Such proof must satisfy two distinct but equally crucial components: “A [defendant] must show that counsel’s performance was deficient, and that the deficiency prejudiced the defense.” (Wiggins v. Smith (2003) 539 U.S. 510, 521 (Wiggins), italics added; Buck v. Davis (2017) 580 U.S. 100, 118 (Buck); see Strickland v. Washington (1984) 466 U.S. 668, 687 (Strickland).) Both components of the test “are mixed questions of law and fact subject to our independent review.” (In re Gay (2020) 8 Cal.5th 1059, 1073 (Gay); In re Long (2020) 10 Cal.5th 764, 774 (Long).) As to the first component, the const

22
People v. Cunninghamgreen
cal · 2001 · cited in 2 California opinions naming this issue, 2022–2022
2 sentences

2022(Wiggins v. Smith (2003) 539 U.S. 510, 521 (Wiggins), italics added; see Strickland v. Washington (1984) 466 U.S. 668, 687 (Strickland).) Both components “are mixed questions of law and fact subject to our independent review.” (In re Gay (2020) 8 Cal.5th 1059, 1073 (Gay).) “On direct appeal, a finding of deficient performance is warranted where ‘(1) the record affirmatively discloses counsel had no rational tactical purpose for the challenged act or omission, (2) counsel was asked for a reason and failed to provide one, or (3) there simply could be no satisfactory explanation.’ [Citation.] ‘[W

2022Analysis “An ineffective assistance claim has two components: A [defendant] must show that counsel’s performance was deficient, and that the deficiency prejudiced the defense.” (Wiggins v. Smith (2003) 539 U.S. 510, 521 ; Strickland v. Washington (1984) 466 U.S. 21 . 668, 687 (Strickland).) Both components “are mixed questions of law and fact subject to our independent review.” (In re Gay (2020) 8 Cal.5th 1059, 1073 .) “On direct appeal, a finding of deficient performance is warranted where ‘(1) the record affirmatively discloses counsel had no rational tactical purpose for the challenged act

22
People v. Kippgreen
cal · 1998 · cited in 2 California opinions naming this issue, 2016–2016
2 sentences

2016So I'm not going to do a split sentence." 6 A. Legal Principles The applicable standards are well settled: " 'An ineffective assistance claim has two components: A defendant must show that counsel's performance was deficient, and that the deficiency prejudiced the defense.' [Citations.] [¶] . . . [¶] 'To establish deficient performance, a petitioner must demonstrate that counsel's representation "fell below an objective standard of reasonableness." ' " (In re Welch (2015) 61 Cal.4th 489, 514 .) In evaluating counsel's conduct, "a court must indulge a strong presumption that counsel's conduct f

2016Dillard Has Not Shown His Counsel Rendered Ineffective Assistance A. Legal Principles The applicable standards are well settled: " 'An ineffective assistance claim has two components: A defendant must show that counsel's performance was deficient, and that the deficiency prejudiced the defense.' [Citations.] [¶] . . . [¶] 'To establish deficient performance, a petitioner must demonstrate that counsel's representation "fell below an objective standard of reasonableness." ' " (In re Welch (2015) 61 Cal.4th 489, 514 .) In evaluating counsel's conduct, "a court must indulge a strong presumption th

22
The People v. Maigreen
cal · 2013 · cited in 4 California opinions naming this issue, 2021–2025
2 sentences

2025We are not persuaded. “ ‘An ineffective assistance claim has two components: A [defendant] must show that counsel’s performance was deficient, and that the deficiency prejudiced the defense.’ ” (In re Gay (2020) 8 Cal.5th 1059 , 1073; see Strickland v. Washington (1984) 466 U.S. 668, 687 (Strickland).) Counsel’s 9 performance was deficient if “it fell below an objective standard of reasonableness under prevailing professional norms.” (People v. Mai (2013) 57 Cal.4th 986, 1009 .) The defense was prejudiced if there is “a reasonable probability that, but for counsel’s deficient performance, the

2025“To demonstrate ineffective assistance of counsel,” a defendant “ ‘must show that counsel’s performance was deficient, and that the deficiency prejudiced the defense.’ [Citation.] On direct appeal, a finding of deficient performance is warranted where ‘(1) the record affirmatively discloses counsel had no rational tactical purpose for the challenged act or omission, (2) counsel was asked for a reason and failed to provide one, or (3) there simply could be no satisfactory explanation.’ (People v. Mai (2013) 57 Cal.4th 986, 1009 .) ‘[W]here counsel’s trial tactics or strategic reasons for challe

14
Bell v. Conegreen
scotus · 2002 · cited in 3 California opinions naming this issue, 2021–2021
2 sentences

2021Judicial review of counsel’s performance is deferential; to establish deficient performance, the defendant ‘must overcome the presumption that, under the circumstances, the challenged action “might be considered sound trial strategy.”’” (In re Gay, supra, 8 Cal.5th at p. 1073 ; Harrington v. Richter (2011) 562 U.S. 86, 105 [“standard for judging counsel’s representation is a most deferential one”]; Bell v. Cone (2002) 535 U.S. 685, 702 .) Defendant’s “burden in this regard ‘is difficult to carry’ in this case, because this is a direct appeal and the record does not disclose the reason for coun

2021Judicial review of counsel’s performance is deferential; to establish deficient performance, the defendant ‘must overcome the presumption that, under the circumstances, the challenged action “might be considered sound trial strategy.”’” (In re Gay, supra, 8 Cal.5th at p. 1073 ; see Harrington v. Richter (2011) 562 U.S. 86, 105 [“standard for judging counsel’s representation is a most deferential one”]; see also Bell v. Cone (2002) 535 U.S. 685, 702 [same].) In this regard, trial counsel’s declaration in support of Saran’s habeas corpus petition is significant for what it does not say.

13
People v. Carrascogreen
cal · 2014 · cited in 3 California opinions naming this issue, 2016–2021
2 sentences

2021If it is easier to dispose of an ineffectiveness claim on the ground of lack of sufficient prejudice, which we expect will often be so, that course should be followed.”15 (People v. Carrasco (2014) 59 Cal.4th 924, 982 , citing Strickland v. Washington (1984) 466 U.S. 668, 697 .) Here, we conclude defendant has failed to show prejudice.

2016(People v. Thompson (2010) 49 Cal.4th 79, 122 .) Where " ' " 'the record on appeal sheds no light on why counsel acted or failed to act in the manner challenged[,] . . . unless counsel was 7 asked for an explanation and failed to provide one, or unless there simply could be no satisfactory explanation,' the claim on appeal must be rejected." ' " (People v. Carrasco (2014) 59 Cal.4th 924, 982 .) "Further, 'a court need not determine whether counsel's performance was deficient before examining the prejudice suffered by the defendant as a result of the alleged deficiencies. . . .

13
In re Welchgreen
cal · 2015 · cited in 3 California opinions naming this issue, 2016–2017
2 sentences

2017He argues those overt acts involved funding for TradeCo, which defendants started and operated until the CFTC changed its regulations, and the jury could find overt acts 26, 27 and 28 were not part of a criminal conspiracy. “ ‘An ineffective assistance claim has two components: A [defendant] must show that counsel’s performance was deficient, and that the deficiency prejudiced the defense.’ [Citation.] [¶] . . . [¶] ‘To establish deficient performance, a petitioner must demonstrate that counsel’s representation “fell below an objective standard of reasonableness.” ’ ” (In re Welch (2015) 61 Ca

2017He argues those overt acts involved funding for TradeCo, which defendants started and operated until the CFTC changed its regulations, and the jury could find overt acts 26, 27 and 28 were not part of a criminal conspiracy. “ ‘An ineffective assistance claim has two components: A [defendant] must show that counsel’s performance was deficient, and that the deficiency prejudiced the defense.’ [Citation.] [¶] . . . [¶] ‘To establish deficient performance, a petitioner must demonstrate that counsel’s representation “fell below an objective standard of reasonableness.” ’ ” (In re Welch (2015) 61 Ca

13
People v. Bellgreen
cal · 2019 · cited in 2 California opinions naming this issue, 2020–2022
2 sentences

2022Defendant thus 9 bears the burden of establishing constitutionally inadequate assistance of counsel. [Citations.] If the record on appeal sheds no light on why counsel acted or failed to act in the manner challenged, an appellate claim of ineffective assistance of counsel must be rejected unless counsel was asked for an explanation and failed to provide one, or there simply could be no satisfactory explanation.”’” (People v. Wang (2020) 46 Cal.App.5th 1055 , 1088; see People v. Bell (2019) 7 Cal.5th 70, 125 .) a.

2020(In re Gay, at p. 1073.) But “ ‘[u]nless a defendant establishes the contrary, we shall presume that “counsel’s performance fell within the wide range of professional competence and that counsel’s actions and inactions can be explained as a matter of sound trial strategy.” [Citation.] If the record “sheds no light on why counsel acted or failed to act in the manner challenged,” an appellate claim of ineffective assistance of counsel must be rejected “unless counsel was asked for an explanation and failed to provide one, or unless there simply could be no satisfactory explanation.” [Citations.]

12
People v. Arredondogreen
cal · 2019 · cited in 2 California opinions naming this issue, 2021–2022
2 sentences

2022Analysis To demonstrate ineffective assistance of counsel, Scott “ ‘must show that counsel’s performance was deficient, and that the deficiency prejudiced the defense.’ [Citation.]” (People v. Johnsen (2021) 10 Cal.5th 1116, 1165 .) “Usually, ‘ineffective assistance [of counsel claims are] more appropriately decided in a habeas corpus proceeding.’ [Citation.]” (People v. Hoyt (2020) 8 Cal.5th 892, 958 .) On direct appeal, “we may reverse ‘only if (1) the record affirmatively discloses counsel had no rational tactical purpose for the challenged act or omission, (2) counsel was asked for a reaso

2021Judicial review of counsel’s performance is deferential; to establish deficient performance, the defendant ‘must overcome the presumption that, under the circumstances, the challenged action “might be considered sound trial strategy.” ’ ” (In re Gay, supra, 8 Cal.5th at p. 1073 ; Harrington v. Richter (2011) 562 U.S. 86, 105 [“standard for judging counsel’s representation is a most deferential one”]; Bell v. Cone (2002) 535 U.S. 685, 702 .) Gonzalez’s “burden in this regard ‘is difficult to carry’ in this case, because this is a direct appeal and the record does not disclose the reason for cou

12
People v. Riosgreen
cal · 2000 · cited in 1 California opinions naming this issue, 2025–2025
1 sentence

2025(In re Gay (2020) 8 Cal.5th 1059 , 1073 [“ ‘An ineffective assistance claim has two components: A petitioner must show that counsel’s performance was deficient, and that the deficiency prejudiced the defense.’ ”].) 10 to instructions on the lesser included offense of voluntary manslaughter if evidence of provocation or imperfect self-defense, which would support a finding ‘that the offense was less than that charged,’ is lacking.” (People v. Rios (2000) 23 Cal.4th 450, 463, fn. 10 .) Second, as explained above, there was insubstantial evidence of heat of passion; therefore, the trial court did

11
Hill v. Lockhartgreen
scotus · 1985 · cited in 1 California opinions naming this issue, 2022–2022
11
In re Lewisgreen
cal · 2018 · cited in 1 California opinions naming this issue, 2022–2022
11
In Re Alvernazgreen
cal · 1992 · cited in 1 California opinions naming this issue, 2022–2022
11
People v. Farnamgreen
cal · 2002 · cited in 1 California opinions naming this issue, 2021–2021
11
People v. Montielred
cal · 1993 · cited in 1 California opinions naming this issue, 2016–2016
11
In Re Hamiltongreen
cal · 1999 · cited in 1 California opinions naming this issue, 2004–2004
11
In re Cudjogreen
cal · 1999 · cited in 1 California opinions naming this issue, 2004–2004
11
In Re Scottgreen
cal · 2003 · cited in 1 California opinions naming this issue, 2004–2004
11

Distinguished, questioned or overruled (0)

CaseNegativeCited
No negative-treatment citations attached to this issue in California. Read the followed side critically anyway.

Also cited on this issue (22)

CaseCitedYears
People v. Weaver green
cal · 2001
2 sentences

2025To demonstrate ineffective assistance of counsel, a defendant “ ‘must show that counsel’s performance was deficient, and that the deficiency prejudiced the defense.’ ” (People v. Johnsen (2021) 10 Cal.5th 1116 , 1165; Strickland v. Washington (1984) 466 U.S. 668, 687 .) On direct appeal, “a court may find deficient performance only if: (1) the record affirmatively discloses counsel had no rational tactical purpose for the challenged act or omission, (2) counsel was asked for a reason and failed to provide one, or (3) there simply could be no satisfactory explanation.” (People v. Campos (2024)

2025“To demonstrate ineffective assistance of counsel,” a defendant “ ‘must show that counsel’s performance was deficient, and that the deficiency prejudiced the defense.’ [Citation.] On direct appeal, a finding of deficient performance is warranted where ‘(1) the record affirmatively discloses counsel had no rational tactical purpose for the challenged act or omission, (2) counsel was asked for a reason and failed to provide one, or (3) there simply could be no satisfactory explanation.’ (People v. Mai (2013) 57 Cal.4th 986, 1009 .) ‘[W]here counsel’s trial tactics or strategic reasons for challe

32021–2025
People v. Thompson green
cal · 2010
2 sentences

2016(People v. Thompson (2010) 49 Cal.4th 79, 122 .) Where " ' " 'the record on appeal sheds no light on why counsel acted or failed to act in the manner challenged[,] . . . unless counsel was 7 asked for an explanation and failed to provide one, or unless there simply could be no satisfactory explanation,' the claim on appeal must be rejected." ' " (People v. Carrasco (2014) 59 Cal.4th 924, 982 .) "Further, 'a court need not determine whether counsel's performance was deficient before examining the prejudice suffered by the defendant as a result of the alleged deficiencies. . . .

2016(People v. Thompson (2010) 49 Cal.4th 79, 122 ; see also People v. Montiel (1993) 5 Cal.4th 877, 911 [to resolve such a claim on direct appeal, the record must make clear the challenged act was outside the range of reasonable competence].) Where " ' " 'the record on appeal sheds no light on why counsel acted or failed to act in the manner challenged[,] . . . unless counsel was asked for an explanation and failed to provide one, or unless there simply could be no satisfactory explanation,' the claim on appeal must be rejected." ' " (People v. Carrasco (2014) 59 Cal.4th 924, 982 .) "Further, 'a

22016–2016
People v. Soto green
cal · 2018
1 sentence

2026With respect to imperfect self-defense, evidence of voluntary intoxication is not admissible “on the question of whether a defendant believed it necessary to act in self-defense.” (People v. Soto (2018) 4 Cal.5th 968, 970 .) “‘If you voluntarily choose to become intoxicated and then kill someone, you may not claim that you were so intoxicated you were unaware your victim posed no threat to you when you killed, although you may claim you were too intoxicated to intend to kill or premeditate or have the specific intent to commit some other felony.’” (Id. at pp. 978-979.) “To demonstrate ineffect

12026–2026
People v. Ricardo P. (In Re Ricardo P.) green
cal · 2019
1 sentence

2026In re Ricardo P., supra, 7 Cal.5th at page 1118 applied our Supreme Court’s longstanding rule from Lent that a “ ‘condition of probation will not be held invalid unless it “(1) has no relationship to the crime of which the offender was convicted, (2) relates to conduct which is not in itself criminal, and (3) requires or forbids conduct which is not reasonably related to future criminality.” ’ [Citation.] The Lent test ‘is conjunctive — all three prongs must be satisfied before a reviewing court will invalidate a probation term.’ ” Tindle’s counsel could have reasonably decided not to challeng

12026–2026
People v. Lopez green
cal · 2008
1 sentence

2025(People v. Johnsen (2021) 10 Cal.5th 1116, 1164-1165 (Johnsen).) As defendant points out, “[a] defendant whose counsel did not object at trial to alleged prosecutorial misconduct can argue on appeal that counsel’s inaction violated the defendant’s constitutional right to the effective assistance of counsel.” (People v. Lopez (2008) 42 Cal.4th 960, 966 .) “To demonstrate ineffective assistance of counsel, [the defendant] ‘must show that counsel’s performance was deficient, and that the deficiency prejudiced the defense.’ [Citations.] On direct appeal, a finding of deficient performance is warra

12025–2025
People v. Gomez green
cal · 2018
1 sentence

2025To demonstrate ineffective assistance of counsel, Leslie “‘must show that counsel’s performance was deficient, and that the deficiency prejudiced the defense.’” (People v. Johnsen (2021) 10 Cal.5th 1116, 1165 ; Strickland v. Washington (1984) 466 U.S. 668, 687 .) “On direct appeal, a finding of deficient performance is warranted where ‘(1) the record affirmatively discloses counsel had no rational tactical purpose for the challenged act or omission, (2) counsel was asked for a reason and failed to provide one, or (3) there simply could be no satisfactory explanation.’” (Johnsen, at p. 1165.) I

12025–2025
In re Hernandez green
calctapp5d · 2019
1 sentence

2025To prevail on such a claim in this appeal, Taylor “ ‘must show that [his] counsel’s performance was deficient, and that the deficiency prejudiced the defense.’ ” (People v. Johnsen (2021) 10 Cal.5th 1116, 1165 .) Prejudice for these purposes means “ ‘ “a reasonable probability that, but for counsel’s unprofessional errors, the result of the proceeding 9 would have been different.” ’ ” (In re Hernandez (2019) 33 Cal.App.5th 530, 546 .) Taylor fails to show one or both elements as to the evidence he challenges.

12025–2025
People v. Merriman green
cal · 2014
1 sentence

2025To demonstrate ineffective assistance of counsel, Leslie “‘must show that counsel’s performance was deficient, and that the deficiency prejudiced the defense.’” (People v. Johnsen (2021) 10 Cal.5th 1116, 1165 ; Strickland v. Washington (1984) 466 U.S. 668, 687 .) “On direct appeal, a finding of deficient performance is warranted where ‘(1) the record affirmatively discloses counsel had no rational tactical purpose for the challenged act or omission, (2) counsel was asked for a reason and failed to provide one, or (3) there simply could be no satisfactory explanation.’” (Johnsen, at p. 1165.) I

12025–2025
People v. Sean W. green
calctapp · 2005
1 sentence

2023To demonstrate ineffective assistance of counsel, a defendant “must show that counsel’s performance was deficient, and that the deficiency prejudiced the defense.” (Wiggins v. Smith (2003) 539 U.S. 510, 521 , citing Strickland v. Washington (1984) 466 U.S. 668, 687 (Strickland).) To establish prejudice, “[t]he defendant must show that there is a reasonable probability that, but for counsel’s unprofessional errors, the result of the proceeding would have been different.” (Strickland, at p. 694.) In demonstrating prejudice, the defendant “must carry his burden of proving prejudice as a ‘demonstr

12023–2023
People v. D.L. green
calctapp · 2012
1 sentence

2023To demonstrate ineffective assistance of counsel, a defendant “must show that counsel’s performance was deficient, and that the deficiency prejudiced the defense.” (Wiggins v. Smith (2003) 539 U.S. 510, 521 , citing Strickland v. Washington (1984) 466 U.S. 668, 687 (Strickland).) To establish prejudice, “[t]he defendant must show that there is a reasonable probability that, but for counsel’s unprofessional errors, the result of the proceeding would have been different.” (Strickland, at p. 694.) In demonstrating prejudice, the defendant “must carry his burden of proving prejudice as a ‘demonstr

12023–2023
People v. Collins green
cal · 2010
1 sentence

2022A reasonable probability is a 16 probability sufficient to undermine confidence in the outcome.” (Id. at p. 694; In re Gay, at p. 1086.) “ ‘A mistrial should be granted if the court is apprised of prejudice that it judges incurable by admonition or instruction. [Citation.] Whether a particular incident is incurably prejudicial is by its nature a speculative matter, and the trial court is vested with considerable discretion in ruling on mistrial motions. [Citation.]’ [Citation.] A motion for a mistrial should be granted when ‘ “ ‘a [defendant’s] chances of receiving a fair trial have been irrep

12022–2022
People v. Jennings green
cal · 1991
12022–2022
People v. Hoyt green
cal · 2020
12022–2022
People v. Padilla green
cal · 1995
12021–2021
People v. Boyette green
cal · 2003
12021–2021
People v. Peterson green
cal · 2020
12021–2021
People v. Edward green
cal · 2018
12021–2021
People v. Espiritu green
calctapp · 2011
12020–2020
In Re Thomas green
cal · 2006
12020–2020
In Re Ross green
cal · 1995
12003–2003
In Re Marquez green
cal · 1992
11995–1995
People v. Mayfield green
cal · 1993
11995–1995

Statutes the citing opinions construe

CA § Cal. Penal Code § 187 (7) CA § Cal. Evidence Code § 352 (6) CA § Cal. Penal Code § 288 (6) CA § Cal. Evidence Code § 1101 (4) CA § Cal. Evidence Code § 210 (4) CA § Cal. Government Code § 70373 (4) CA § Cal. Evidence Code § 1108 (3) CA § Cal. Evidence Code § 801 (3) CA § Cal. Penal Code § 245 (3) CA § Cal. Vehicle Code § 10851 (3)

Counted by distinct opinions that both name this issue and are annotated to the section; sections every opinion cites regardless of issue are not filtered here, so read the counts against the total above.

Where else courts name it

TN 604 (1987–2026) MS 429 (1991–2026) GA 271 (1985–2025) TX 168 (1990–2026) WI 99 (1990–2026) CA 59 (1995–2026) MO 35 (1988–2025) FL 27 (2000–2025) NJ 26 (2018–2026) IL 25 (1989–2024) WA 16 (2003–2021) OH 14 (2004–2026) NM 10 (2002–2024) LA 10 (1987–2025) KY 7 (2021–2025) MT 5 (2013–2024) OK 5 (1987–2004) ID 4 (1994–2019) NC 4 (2005–2025) DC 4 (1992–2021) SC 4 (1989–2025) MD 4 (1999–2003) AR 4 (2021–2025) VA 3 (1986–2006) NV 3 (1992–2016) MN 3 (2011–2015) PA 3 (1986–1987) WY 2 (1987–2005) AL 2 (2001–2005)

Opinions by the citing court's state. A doctrine retained in one state and abandoned in another shows up here as a year span that stalls.

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