But the thing about swing states is that they have an electorate that can go either Democrat or Republican. A far-right politician will be less enticing to moderate voters in those states (even if they don't have the surname 'Trump') and he doesn't have the charisma to hold on to all the MAGAchuds.
If lacks charisma and 50,000 people you refer to as MAGAchuds don't turn out, he'll still be ahead of the game if 60,000 people who were incensed at President Trump decide that four years of President Biden has been satisfactory so they cannot be bothered to turn out and vote this time.