Vote.
The problem is that everytime is “let’s wait for the election then push them left” and it never works.
This is not the fault of voters or non voters, it’s that American democracy is not a democracy, the parties never listen to the will of the people. And that’s why voting ultimately doesn’t change anything, because it’s just a pretext to make you think you are making a difference. As important as it is to vote, that is how our leaders view it.