Democratic U.S. Sen. Bob Casey and Dave McCormick, his Republican rival, are going head-to-head in their first debate Thursday night as they vie for a Pennsylvania seat in the narrowly divided Senate.
This year's U.S. Senate election could change control of the chamber, making down-ballot races closely watched as the presidential election is razor thin.
Democratic Sen. Bob Casey and Republican businessman David McCormick will take the debate stage in Pennsylvania's capital Thursday night as the parties fight over control of the U.S.