It is lowest in history in this point of presidency apart from Nixon, who resigned at this point. That 30-35% is the floor, which won’t budge, likely because the hard core Maga Republicans have nowhere to go in US two-party system - which would be not just a surrender of long-held political beliefs, but a complete social death as well. This does not mean that the core Maga is very happy either, but they hope the movement continues after Trump so they can finally get the full Christian Nationalist Fascism they so desire.

I doubt that is going to happen. Trump is going keep the strings behind the party, fucking everybody hard, until finally he dies or otherwise implodes. What is left of American democracy when that happens is a whole another thing.