Republican Sen. Darline Graham, who is running for a chance to take her late brother Lindsey Graham's Senate seat on the general election ballot, is facing crit

Republican Sen. Darline Graham, who is running for a chance to take her late brother Lindsey Graham's Senate seat on the general election ballot, is facing criticism after saying during a debate that she "is not that informed on national security." [▻](https://video.twimg…