Careful, if Dems have a majority and they do nothing significant with it, you'll have 2025 all over again.
This happened in France during François Hollande's term. The French people were fed up with Sarkozy's outraging reign, so we voted massively "left", only to discover that the French socialist party was applying... right-wing politics and economics (signing the entire party's death warrant), leading us to 10 years of neo-liberal/fascist Macron, who claimed to be a centrist (the equivalent of your Dems), capitalizing on both right and left voters' disappointment.
Pressurize your elected representative. Don't let them slip, or terrorize them into leftism. They're your elected representatives. They're your bitches. Treason to the People must be met with retribution.