David McCormick, who has been declared the winner of the race by the Associated Press, attended new member orientation just this past week.

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,

Pennsylvania's state Supreme Court on Monday weighed in on a flashpoint amid ongoing vote counting in the U.S. Senate election between Democratic Sen. Bob Casey and Republican David McCormick, ordering counties not to count mail-in ballots that lack a correct handwritten date on the return envelope.