No, no, you're absolutely wrong. That is just Walker's name recognition in the state. Bush is inevitable because only he can really appeal to Hispanics (muh Hispanic wife), Independents and younger voters. Don't worry, once the people get to know Jeb, he will wipe the floor with Walker and the rest of the clown car. He is also the only one who can beat Hillary, obviously.
Don't forget, in alot of the states that Romney was leading in, Walker is now leading Jeb, and Illinois is one of them. And Dems will be looking to vote in the G O P primary, and voting for Walker, due to Bush fatigue.