Wall Street Journal: “Trump’s decision to endorse Graham, the sister of the late Sen. Lindsey Graham, looms large as a field of 10 Republicans sprint toward Tuesday’s GOP primary. The race is likely to pivot over whether GOP voters view Graham, who was appointed by Republican Gov. Henry McMaster to serve the final six months of her brother’s term, as someone deserving of a Senate seat—and how much sway the president maintains over his party.”“Below the surface, the race is simmering with tensions. Rank-and-file Republicans are irritated that the rare Senate vacancy could be handed over to a sibling of the late senator.”