I suspect the cheating in 2028 is going to be far worse than we could ever imagine. Red states are going to destroy the process and force far left lunatics on us in both houses of congress. Even some Republican states seem to be unwilling to accept the fraud we know is happening. Like California, and 2020, if they cheat their way into the White House and congress, there will be no investigations and anyone who questions the outcome will be prosecuted.
Several states have the new district maps in place already and a few others have promised changes before the 2028 cycle (including my state, Georgia).
Republicans gained alot of seats by eliminating Dems gerrymandering schemes, I'm sure Dems will cheat like hell but it probably can't be at a level where they could win back the House. I think the Senate will stay Reepublican or just be split down the middle, ensuring more gridlock.
But I don't think the Dems can cheat enough to win the Presidency again, and their candidates are so horrible there's no way they'll get real support.