Nope. Swing voters weren't a factor this year at all. It was a simple electoral gang war where the Dems and GOP mobilized their base head-to-head for a mega rumble, and the Dem base beat them in the knife fight.
In the so-called rust-Belt, Trump won those three states (WI, MI, PA) by a margin of some 80,000 votes in 2016. In 2020, Biden won those states back with a margin of (at present and still counting),
Wisconsin - 20,539
Michigan - 136,000 or so
Pennsylvania - 45,000 or so.
Combine that and it's a margin of about 200,000 votes more than Trump, double the margin from 2016, and probably gonna be a bit higher before it's over. People who say the Rust Belt is a swing state are deluding themselves. Because these numbers prove 2016 was a fluke.
In the case of Arizona, Biden won thanks to grass-roots activists who mobilized the base, a growing number of Hispanics in the population (and yeah, Biden actually did far better with Hispanics than the early story had you believe), as well as transplants from CA fleeing gentrification, this has helped turned AZ blue. Likewise, Native American voters came out substantially for Biden in Arizona, voting 97% for him,
97%. The Coronavirus mobilized Native Americans against Trump that's for sure. At the same time, Trump made substantial mistakes with AZ GOP, he insulted the memory of John McCain to the extent that his widow not only endorsed Joe Biden but also the Democrat Party of AZ as a whole. Trump also didn't make enough campaign stops in the state. So honestly, it's a wash...Arizona does have potential to be consolidated into blue, going forward.
In the case of Georgia, the answer is Stacey Abrams, Stacey Abrams, and did I mention Stacey Abrams. She and the activism surrounding her, registered a huge chunk of votes, and increased the turnout and that helped her flip the state electorally.
The desire for normalcy doesn't reflect the considerable left wing gains made in this election.
https://www.jacobinmag.com/2020/11/d...ection-day-dsa
And the fact that Moderate Dems did far worse than Progressives even in Swing Elections.