It used to be common for a state’s residents to vote for a Senate candidate of one party and a presidential candidate from the other. Over time, as politics became increasingly nationalized, those divisions largely disappeared.

U.S. Senate candidate David McCormick of Pennsylvania sought a court order to allow the Republican to make mass challenges to provisional ballots in Philadelphia in a race he appears to have won, according to court papers.

Pennsylvania Republican Senate candidate David McCormick filed two lawsuits challenging provisional ballots in Philadelphia, signaling he is prepared to take his fight to the Supreme Court. McCormick declared victory after The Associated Press projected Thursday that he beat incumbent Sen.