I'm thinking there must be millions of Repubs that fit into this surreal mindset where they know very well they're being lied to and lied to very often by their leadership yet will go along with it, inflate it and pass it around as if it were the indisputable truth just because it makes them feel good doing it, to feel they are supporting their team, to make wishful thinking become their reality, the new normal that they want the rest of the nation to accept, allow and fall victim to.
Why? Because it's all they have to win at the polls. Well, beside their wholesale gerrymandering and all those restrictive voting laws they're passing in order to fix the vote in their favor, of course. The Repubs have to accept these undemocratic ploys of theirs as being OK for themselves to do, but high treason if the Dems tried it. And that's OK with them too. The party has hit rock bottom ethics and morals-wise and still be proud of it. Things are that bad for them.
They're not perpetrating these cheats, spreading lies and misinformation because they want to, it's because they have to in order to survive the rising tide of demographics that they've positioned themselves to swim against.