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  • Smith’s Criminal Case Compendium is no longer available. Effective June 2025, personnel changes and resource limitations have made it impossible for us to maintain the Compendium to the standard of excellence that the School of Government strives to achieve. We appreciate those who have used and supported the Compendium over the years. We will continue to publish and archive summaries of North Carolina appellate cases concerning criminal law on the North Carolina Criminal Law Blog.

  • Smith’s Criminal Case Compendium is no longer available. Effective June 2025, personnel changes and resource limitations have made it impossible for us to maintain the Compendium to the standard of excellence that the School of Government strives to achieve. We appreciate those who have used and supported the Compendium over the years. We will continue to publish and archive summaries of North Carolina appellate cases concerning criminal law on the North Carolina Criminal Law Blog.

  • Smith’s Criminal Case Compendium is no longer available. Effective June 2025, personnel changes and resource limitations have made it impossible for us to maintain the Compendium to the standard of excellence that the School of Government strives to achieve. We appreciate those who have used and supported the Compendium over the years. We will continue to publish and archive summaries of North Carolina appellate cases concerning criminal law on the North Carolina Criminal Law Blog.
  • Smith’s Criminal Case Compendium is no longer available. Effective June 2025, personnel changes and resource limitations have made it impossible for us to maintain the Compendium to the standard of excellence that the School of Government strives to achieve. We appreciate those who have used and supported the Compendium over the years. We will continue to publish and archive summaries of North Carolina appellate cases concerning criminal law on the North Carolina Criminal Law Blog.
  • Smith’s Criminal Case Compendium is no longer available. Effective June 2025, personnel changes and resource limitations have made it impossible for us to maintain the Compendium to the standard of excellence that the School of Government strives to achieve. We appreciate those who have used and supported the Compendium over the years. We will continue to publish and archive summaries of North Carolina appellate cases concerning criminal law on the North Carolina Criminal Law Blog.
  • Smith’s Criminal Case Compendium is no longer available. Effective June 2025, personnel changes and resource limitations have made it impossible for us to maintain the Compendium to the standard of excellence that the School of Government strives to achieve. We appreciate those who have used and supported the Compendium over the years. We will continue to publish and archive summaries of North Carolina appellate cases concerning criminal law on the North Carolina Criminal Law Blog.

Smith's Criminal Case Compendium

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Porter v. McCollum, 558 U.S. 30 (Nov. 30, 2009)

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Criminal Procedure > Counsel Issues > Ineffective Assistance of Counsel > Strickland Attorney Error Issues

A capital defendant’s trial counsel’s conduct fell below an objective standard of reasonableness when counsel failed to investigate and present mitigating evidence, including evidence of the defendant’s mental health, family background, and military service. The state court’s holding that the defendant was not prejudiced by counsel’s deficient representation was unreasonable. To establish prejudice, the defendant need not show that counsel’s deficient conduct more likely than not altered the outcome; the defendant need only establish a probability sufficient to undermine the confidence in the outcome, as he did in this case.