Casey, the incumbent Democrat, has not conceded to his GOP opponent, who was leading Friday morning by a slim margin of only ...

Republican U.S. Senate candidate Dave McCormick on Thursday appeared to declare victory in his race against Democratic ...

After days of the race being too close to call, the Associated Press named Republican Dave McCormick the winner in the race ...

Republican Dave McCormick appeared to win a major upset in Pennsylvania, beating three-term incumbent Bob Casey. The victory ...

Bill Clark/CQ-Roll Call, Inc via Getty; ANDREW CABALLERO-REYNOLDS/AFP via Getty Former hedge fund CEO Dave McCormick has ...

NEW STORY: Republican Dave McCormick flips pivotal Pennsylvania Senate seat, defeating Bob Casey Pennsylvania’s three-term ...

Republican Senate candidate and former Bridgewater CEO Dave McCormick has staged a come-from-behind victory against Sen. Bob ...

Republican Dave McCormick defeated incumbent Democratic Sen. Bob Casey in Pennsylvania’s Senate race, The Associated Press ...

One of Pennsylvania's two U.S. Senate seats is before voters Tuesday, with Sen. Bob Casey vying for a fourth term against ...

Republican US Senate candidate Dave McCormick has filed suit against the Philadelphia Board of Elections and three city ...