Let's ignore the conspiracy theories here for a moment. There's only one party in America that wants to cancel elections if they don't go their way, and it's not the Democratic party.
But, I'd just like to point out, that there's no such thing as "not allowing" Trump to run. Trump could be serving a life sentence in federal prison he could still run. More importantly if Cheeto Fuhrer is what you absolutely want, I'd just like to remind you that you are literally allowed to write in any name whether that name is on the ballot or not.
But again, there's only one party that wants to cancel elections or rejects their results when it doesn't go their way. Republicans. So stop.
Stop trying to blame the Democrats for the abyssal disconnect between the GOP base and the general public.
Currently there's no Republican that could win a primary who at the same time could win a general election too.
And while a lot of people (including myself) thought DeSantis might be it (for a brief moment circa late 2020 to early 2021), DeSantis' presidential ambitions died as his "War on Woke" peaked. He stopped looking "conservative but competent" and started looking just weird and unhinged.