Trump may have endorsed Darline Graham, but GOP Senate hopefuls aren’t backing down

As the starting gun in the Republican race to succeed the late Sen. Lindsey Graham of South Carolina is officially fired, the showdown is shaping up as the latest test of President Donald Trump's immense clout over the GOP and the power of his endorsements in party primaries. On the eve of Tuesday's kickoff of a week-long filing period for the Aug. 11 primary, Sen. Darline Graham, who was appointed last week to fill the remainder of her late brother's term, announced in an interview on Fox News'