Sen. Bob Casey (D-PA) has not conceded his race against Republican Dave McCormick, even though multiple outlets have declared McCormick the victor.

Counties in Pennsylvania are directed to not count illegal ballots, the state’s top court said in a ruling issued Monday.

Pennsylvania's high court ordered state county election officials on Monday to not count "invalid" mail-in ballots in the U.S. Senate race between Democratic Sen. Bob Casey and his Republican challenger,