I tend to agree that there are very few swing voters - as in people who think both candidates are ok, so they carefully weigh their vote. People either love Trump or hate him.
One exception though - although black voters are the last bunch Republicans tend to think about, they may be instrumental in Trump winning, particularly if it’s a blowout.
But for the rest - this election will be determined by TURNOUT!!!!
Instead of swing voters....I’m likely to think there are more iffy-show-up-voters. These are the guys who over a twenty year period, will admit in the four-year and two-year election periods....they’ve missed voting 50-percent of the time. There are probably more of them, than the guys who flip from Republican-to-Democrat-to-Republican.