Before a homicide trial begins, some of the most important questions concern what evidence can be used. For example, the Federal Rules of Evidence put strict limits on the prosecution's ability to introduce evidence that the defendant was convicted of a different crime.
The death penalty is not common in Pennsylvania, nor do Pennsylvania residents want it to be. One poll of Pennsylvanians in 2015 found that 54% support a life sentence, not capital punishment, as the preferred penalty for murder. The state has not carried out an execution since 1999.