That's because they really don't care. Many will simply change parties and continue on the same as they were before. Happened here in Texas. Our current gov Goodhair used to be a rat. Changed parties when he realized a rat couldn't get elected to statewide office here. Of course, last election, you'd find freepers screaming about a vote for anyone else being a vote for a rat. Like there was really any difference.
Next cycle, Hutchison will be running, and we'll get more of the same.
I thought I read that she wouldn't be running again. Dunno if it's true, though.