This is just a meme, like #NeverTrump in 2016 or PUMAs in 2008. There aren’t a huge number of Trump voters purposefully sitting out the run-offs because they feel Perdue and Loeffler somehow betrayed Trump. It’s pure pundit fantasy and mental masturbation for people that follow politics too much.
There doesn't have to be, they are merely the excuse for what they intend to do. I have thought for 50 years that polls were not to reveal opinion but to mold opinion and lately Rush is starting to say the same thing.
They use polls to make their fraudulent vote stealing make sense. How do you make a guy who daily puts together rallies that attract 40 or 50 thousand screaming fans? Simple you take a guy that can't get 50 people to show up at a rally and claim through polling that he is leading by 15 to 20 percent and keep pounding that disinformation into the media and there you go.