Romney wasn't exactly a conservative firebrand. I don't know enough to say whether Walker will be as a candidate.
But four million 2008 McCain voters didn't show up in 2012 for Romney. I don't think that would be the case if Walker ran.
And just to be clear here, I'm not pushing Walker for president on this thread, I just want the poll to tilt to him to tweak the station's "journalists".
“Romney wasn’t exactly a conservative firebrand.”
That was supposed conservative Paul Ryans job: win Wisconsin.