PHILADELPHIA — Democratic incumbent Sen. Bob Casey Jr. faces a well-financed challenge from Republican Dave McCormick in Pennsylvania’s nationally watched U.S. Senate race. While Casey held a lead for much of the campaign, the race tightened in the ...

Casey v. McCormick tracks as second-most expensive race in the nation in a year where every seat counts in the battle for majority control of the U.S. Senate.

Republican candidate for Senate David McCormick gains the endorsement of the firefighters' union in Philadelphia, the largest city in the highly sought-after swing state of Pennsylvania. McCormick has gained the favor of the union over his opponent,