Turns out that Ryan Routh, a radicalized assassin, didn't just donate to democrats 20 times since 2019 and vote for them in May, and support Kamala and Biden on social media.
It turns out he's been a registered Democrat for 12 years! In fact, the only "fluctuating" his political affiliation has done in the last decade and a half, was voting for trump a single time in 2016.
Oh, he's also a lifelong career criminal, like most democrats.
https://www.newsweek.com/ryan-wesley-routh-republican-democrat-donald-trump-shooting-1954438
Trump Assassination Attempt: Is Ryan Wesley Routh a Democrat or Republican?

Ryan Wesley Routh, the suspected would-be assassin of former President Donald Trump over the weekend, has been confirmed as a registered member of the Democratic Party, according to reports seen by Newsweek.

Routh first registered with the Democratic Party in February 2012, with his voter information describing him as an "active" member. The report, produced by data analytics company Lexis, also identifies Routh as a 58-year-old with 100 criminal filings, almost all of which were filed in North Carolina.