JUST IN: Darline Graham advances to the GOP Senate runoff, moving one step closer to securing the Republican nomination with Trump's backing. The sister of the

JUST IN: Darline Graham advances to the GOP Senate runoff, moving one step closer to securing the Republican nomination with Trump's backing. The sister of the late South Carolina Sen. Lindsey Graham, Darline leads the polls in the special Republican primary as of 8:30pm ET with 32.5% of the vote, …