Bob Casey, Lou Barletta

Republican challenger U.S. Rep. Lou Barletta, makes a point alongside U.S. Sen.Bob Casey, D-PA, during a debate Saturday Oct. 20, 2018, in the studio of WPVI-TV in Philadelphia. Casey, 58, of Scranton, is seeking a third six-year term. Barletta, 62, of Hazleton, is in his fourth term in Congress. (AP Photo/Jacqueline Larma)