SC, since a Biden mega landslide is more likely than a Trump wave.
If it's looking like a Biden mega landslide, that probably helps Graham more than it hurts him.
How?
The reasons why people who normally are safe R or tilt R voters would be willing to dump Trump don't really apply to Senate races, especially in a state such as South Carolina that hasn't suffered as much from coronavirus as the nation has. Moreover, if it looks like a D will get the White House, those voters will be less likely to cast a protest vote against Graham by voting third party instead of R. They'll instead vote R to keep a check against Biden, especially when it comes to appointing judges.
You give way too much credit to the intellect of swing voters.
Poll
