Porter v. Illinois

Background

Anthony Porter was convicted of two murders committed during an armed robbery and sentenced to death. During jury selection the judge read a list of possible witnesses that included the victim’s mother. After the guilty verdict a juror said she attended the same church as the victim’s mother. The judge briefly questioned that juror in open court, did not allow the defense to question her, and later denied the defendant’s motion for a new trial. The Illinois Supreme Court affirmed, and the defense asked the United States Supreme Court to review the case.

Reasoning

The core question raised was how far a trial judge must go, under prior Supreme Court decisions, to investigate possible juror bias. The Court’s majority declined to take the case and denied review. In a dissent from that denial, Justice Marshall argued the trial judge’s brief, leading questions and refusal to permit defense questioning fell short of the minimum required by due process. The dissent emphasized that a juror reportedly said she was ready to vote guilty before deliberations and that another juror’s affidavit described the church connection, meaning the defense lacked a real chance to prove bias.

Real world impact

Because the Court refused to review the case, the conviction and death sentence remain in place and the Illinois rulings stand. The denial leaves unresolved how much questioning a trial judge must permit when juror bias is alleged. This was not a final decision on the merits of the bias claim and could be revisited in another case.

Dissents or concurrances

Justice Marshall, joined by Justice Brennan, would have granted review to clarify the duty of trial judges to conduct meaningful juror questioning and to protect due process in capital cases.