The Democrats may have painted themselves into a corner. There have been some rumblings coming out that say that Trump is eyeing a run in 2024 (which means he pretty much knows he lost this election) He is still exceedingly popular among registered republicans, and if he runs again the cowards in the GOP won't oppose him which means he would get the nomination again in a cakewalk.
Now, there are also rumblings that Joe Biden has committed to be a one-term president, which means Kamala Harris is the presumed front runner to run in 2024. The corporate Dems will assure that she will run virtually unopposed (a progressive candidate might challenge) she will be propped up again by the media and the DNC because they are all-in on identity-politics and she checks way too many boxes not to be their dream candidate. They will again ignore the fact that she has proven how weak she is as a candidate against softball fellow Democrats, and her perceived support among African-Americans is all smoke and mirrors. Remember what happened the last time the Democrats ran their not-well liked, box-checking, dream candidate, against Donald Trump?