ROCK HILL, S.C. (AP) — President Donald Trump was in South Carolina for the second time in a month on Thursday to encourage Republicans to show up for Darline Graham, who is spending the final days of the midterm election trying to fend off a robust challenge from Democrat Annie Andrews for a critical U.S. Senate seat.

Voters in South Carolina have not sent a Democrat to the Senate in nearly three decades. But Andrews, a pediatrician who previously ran unsuccessfully for Congress, is urging voters seeking change to “try something new for once.”

Senate races are often an afterthought in this Republican stronghold. Andrews has mounted an unexpectedly competitive race against Graham, the sister of the late Sen. Lindsey Graham. She was appointed in July by Republican Gov. Henry McMaster to fill the remaining months of her brother’s term after his sudden death.…