Michael Tesler at Monkey Cage:
Graham’s approval rating among South Carolina Republicans declined by 30 percentage points from fall 2014 to 2016. In the 2014 Cooperative Congressional Election Survey (CCES), nearly two-thirds of Palmetto State Republicans approved of Graham’s job performance. Two years later, only one-third did.
By contrast, 69 percent of South Carolina Republicans in the 2016 CCES approved of Sen. Tim Scott (R-S.C.), Graham’s colleague, with only 6 percent disapproving of the junior senator’s job performance. Nearly 90 percent of Republicans have approved of Trump throughout his presidency.