Sen. Darline Graham advanced to a runoff in South Carolina’s special Republican primary to replace her late brother Lindsey Graham in the U.S. Senate. Darline Graham advances to special GOP Senate primary runoff to replace late brother Lindsey GrahamDarline Graham moved forward in the 10-way contest Tuesday despite her being a political unknown, having been close to her brother’s political orbit but never a candidate herself. Henry McMaster appointed Darline Graham to serve out the remaining months of her late brother’s current term. Polls have closed in South Carolina and VermontIn-person Election Day voting has ended in South Carolina and Vermont. Darline Graham was often at her brother’s side for big political moments, like the launch of his 2016 presidential campaign.