Pennsylvania's primaries will cement the lineup for a high-stakes U.S. Senate race between Democratic Sen. Bob Casey and Republican challenger David McCormick. Tuesday's contest will help decide Senate control next year. Casey, seeking a fourth term, is a stalwart of Pennsylvania's Democratic Party. McCormick is a two-time Senate challenger and a former hedge fund CEO who lost narrowly in 2022’s seven-way GOP primary. McCormick’s candidacy is shaping up as the strongest challenge to Casey in his three reelection bids. They'll share a ticket with candidates for president in the premier battleground state. President Joe Biden and former President Donald Trump are expected to win their nominations easily.
