“She has President Trump’s endorsement and is a sympathetic figure after the death of her brother, Sen. Lindsey Graham. As Graham’s temporary replacement, she’s a symbol of the political brand he built over more than two decades in the Senate,” Axios reports.“Driving the news: Even so, Darline Graham faces an uphill battle to win a full Senate term in November, Republicans in D.C. and her home state of South Carolina tell Axios.”