Republican David McCormick, left, is joined by his wife Dina Powell after making remarks at his election night watch party in Pittsburgh, Tuesday, April 23, 2024. McCormick is making his second bid for a Pennsylvania U.S. Senate seat, this time to take on Democratic Sen. Bob Casey. (AP Photo/Gene J. Puskar)
FILE - This photo combo shows. Republican David McCormick, left, addressing supporters at the Heinz History Center in Pittsburgh, Sept. 21, 2023 and Sen. Bob Casey, D-Pa., speaking during an event at AFSCME Council 13 offices, March 14, 2024, in Harrisburg, Pa.. (AP Photo/Gene J. Puskar, Marc Levy, file)
David McCormick, the Republican nominee for U.S. Senate in Pennsylvania, speaks at a campaign event at the Beerded Goat Brewing Co., April 25, 2024, in Harrisburg, Pa. (AP Photo/Marc Levy)
David McCormick, the Republican nominee for U.S. Senate in Pennsylvania, speaks at a campaign event at the Beerded Goat Brewing Co., April 25, 2024, in Harrisburg, Pa. (AP Photo/Marc Levy)
Sen. Bob Casey, D-Pa., arrives at the chamber as the Senate prepares to advance the $95 billion aid package for Ukraine, Israel and Taiwan passed by the House, at the Capitol in Washington, Tuesday, April 23, 2024. (AP Photo/J. Scott Applewhite)
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)