Author: Naomi Lim and Gabrielle M. Etzel

Republican Senate candidate and former Bridgewater CEO Dave McCormick has staged a come-from-behind victory against Sen. Bob Casey (D-PA) to represent Pennsylvania in Washington. McCormick led Casey 49% to 48.5% when the Associated Press called the race Thursday at 4:09 p.m. EST. The margin could set up a recount that Casey projected earlier Thursday and…