In Washington State, it was Republicans, a few years back that helped promote teach pay over democrat refusal. What happened in the next election? The Washington Education Assoication came out supporting democrats up and down the ticket. Folks have learned their political lessons. The WEA in this state has been caught in more campaign funding violations by the state disclosure committee than just about any other organization and all have favored democrats.
Soon even rank and file teachers will see that their union is not helping them poltically.