EXCLUSIVE - Republican Sen. Ted Cruz of Texas will team up on Thursday and Friday with Dave McCormick, one of the front-runners in Pennsylvania’s crowded, combustible, and expensive GOP Senate primary. [cut] Cruz’s two days of campaigning with McCormick will come just ahead of Pennsylvania’s May 17 primary, and it also comes less than a week after former President Donald Trump headlined a rally in western Pennsylvania with McCormick’s rival for the nomination, Mehmet Oz, whom Trump endorsed just a couple of weeks ago.