‘He's all in': Trump tests his sway over the GOP with Darline Graham PoliticoTrump Lays It on the Line for Darline Graham Ahead of South Carolina Runoff The New York TimesSouth Carolina's Senate runoff is a test of Trump's endorsement power MS NOWTrump's endorsement faces major tests in Tuesday's primary runoffs NBC News??? Graham Gaffe tests Trump's endorsement power in South Carolina
