How far could progressive Democrats advance their agenda in the next 2-4 years, if they went all-out, ignoring what might happen in 5 years.

How much of what they accomplish would/could be undone on day one if a Republican were elected in 2024 & how much would be more or less permanent?

Also, for the sake of the question, How far could they advance their agenda EVEN if they play as dirty as possible.

Gerrymandering? Senate representation discrepancies? Stacking courts? etc...