Pennsylvania Sen. Bob Casey (D) is leading by 9 points in his Senate reelection bid against Republican challenger David McCormick, a new survey found. The University of Massachusetts Lowell/YouGov poll found Casey earning 48 percent support among likely voters,

The battle for Pennsylvania’s 19 electoral votes may garner the most headlines nationwide, but the race for its U.S. Senate seat may determine whether Democrats will retain control of the upper chamber,

Several candidates will debate this week in their final messaging to voters, as control of the Senate hangs in the balance. In Pennsylvania tonight, Sen. Bob Casey, the incumbent Democrat, will face off against Republican Dave McCormick.