Whites support the death penalty more than blacks, and men more than women.
Answering that question is complicated. Whatever influence a juror's personal characteristics have on her vote is hard to detect. First, a juror's personal characteristics may get lost in the facts of the case. A juror will tend to vote for death in strong cases and for life in weak ones no matter what her own characteristics. Second, a juror's personal characteristics may get lost in the process of deliberation.