"Progressives should not make the same mistake that Ernst Thälmann made in 1932. The leader of the German Communist Party, Thälmann saw mainstream liberals as his enemies, and so the center and left never joined forces against the Nazis. Thälmann famously said that ‘some Nazi trees must not be allowed to overshadow a forest’ of social democrats, whom he sneeringly called ‘social fascists.’
After Adolf Hitler gained power in 1933, Thälmann was arrested. He was shot on Hitler’s orders in Buchenwald concentration camp in 1944."
Local elections is where most of the current people in power got started. Anyone voting for third party in the presidential race missed the boat.
Vote progressives into local offices so they can get experience to work in state offices so they can get experience to work in Congress so they can get experience to be a good presidential candidate. Also to fill offices at every level with progressives.
And it’s a hell of a lot easier to reform voting there too.