Right now I wouldn’t be certain there will be anything resembling midterms. Trump and his pals are speedrunning turning America into an Russia-style oligarchy. There will be of course be “elections”, that happen to always turn out exactly like the sitting power wants it to be.
I'm not saying they wouldn't like to try that, but I'm not sure exactly how that may happen.
Do you think flooding the zone with shit will work? If they actively rig the next elections do you think that any attempt to point that out will be met by "you were saying all the time that elections cannot be rigged"?
It seems society has been caught off guard by the transformation in the media landscape and the resulting fragmentation of attention.
If the POTUS were to determine the outcome of the midterm elections by decree, that act would be legal. The SCOTUS has already paved all the way to hell.