Meh, I often see political donors being used as scapegoats.
At the end of the day, if you vote for the guy who does bad things because he chooses to sell out to political donors, maybe stop electing that guy.
I really always strive to emphasize voters' role in empowering officials. There's a danger to acting as if voters don't have a key place in the political process, one of those self-fulfilling claims.
If voters are convinced that they have no power, then they don't.
Meanwhile I emphasize, such and such a politician took a bribe? Well, his voters actively empowered a bribable person, and probably confirmed it by reelecting him!