Associated Press

Democratic Sen. Bob Casey and Republican challenger David McCormick will face each other in Pennsylvania’s high-stakes U.S. Senate contest this fall, as Tuesday’s primary election put the men on track for a race that is expected to cost hundreds of millions of dollars and help decide control of the Senate next year.

Casey and McCormick won their respective party primary contests after they were uncontested and now enter what is likely to be a grueling, expensive and hard-fought 2024 general election campaign that culminates in the Nov. 5 vote.

Casey, seeking his fourth term, is perhaps Pennsylvania’s best-known politician and a stalwart of the presidential swing state’s Democratic Party — the son of a former two-term governor and Pennsylvania’s longest-ever serving Democrat in the Senate.