Giving the Democrats control of the US Senate.
I'm with Howie Klein on this, "If Ossoff & Warnock Win, The Dems Better Deliver For Working People Or It's Curtains For The Party."
The reason that the Democrats lost the House, and the Senate, a dozen or so governorships, over 1000 state reps, etc. during Obama's time as President, and the reason that his anointed successor lost to an inverted traffic cone in 2016, and the reason that they under-performed in 2020, is that when given power, they did nothing but suck up to the traditional power centers.
Biden's promise that, "Nothing will fundamentally change," is a recipe for disaster, and fascism.