We also shouldn’t discount that he has a massive media ecosystem behind him that makes it so right wing voters either don’t even know these problems exist or if they do, blame them on someone else.I don't think he will ever drop below 30%. His cult is too stubborn to blame him when he fucks up.
Now of course they largely choose to be lied to on purpose (see Fox after 2020) but it’s definitely helpful to have nonstop propaganda for you inundating the media landscape.