Stephen Rex Edmiston was convicted of raping and murdering two-year-old Bobbi Jo Matthew in October 1988. He admitted to the crime and told police where to find her body.
Edmiston, now 55-year-old, was sentenced to death in November 1989.
Governor Corbett has signed 31 execution warrants during his term, and none have gone through. The last execution was carried out in Pennsylvania in 1999.
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