Like:
People should be allowed to exist
Social programs aren’t communism
The system isn’t working for the people
Edit:
I’ve changed my mind on this.
Let the DNC go full MAGA and when they lose, because they will lose, they get the heat and we can eject them forever. At least sit them in a corner.
Progressives, you fight if you want but I don’t believe the elections will be fair so it’s a win win for you.
OP is right though: the Democrats and the Republicans are not like parties in every other democracy, i.e. expressions of specific political ideologies. They are institutional electoral machines, of an institutionally two-party state. They have their altered their ideological core before: prior to FDR the Democrats were basically just populist racists. They can easily alter their ideological core in the future as well. It just so happens that in the latest party system the Democrats have been the machine used by the American centre and centre left.