FILE - Sen. Bob Casey, D-Pa., smiles while speaking during an event at AFSCME Council 13 offices, March 14, 2024, in Harrisburg, Pa. Tuesday's Pennsylvania primaries will cement the lineup for a high-stakes U.S. Senate race between Democratic Sen. Bob Casey and Republican challenger David McCormick, a contest that is expected to cost hundreds of millions of dollars and could help decide control of the Senate next year. (AP Photo/Marc Levy, file)