TIM CARNEY: Walker could be strolling to massive win in Wisconsin.

Republican Gov. Scott Walker is under investigation, and he is reviled by the largest political force in his state. But you’d never guess that by watching him amble through the stalls at a central Wisconsin dairy farm.

Walker converses with a casual ease rare among politicians. He strolls with a light step through a massive cow barn at Ruedinger Farms on Wednesday. The only thing hanging over his head is the mechanical hawk that chases away the pigeons.

You wouldn’t guess from his demeanor how hated he is. County prosecutors are still investigating him. And the government employee unions — which failed to block his legislation, failed to recall him, and failed to take back the state legislature — still have it in for him.

Well, when your opponent puts a known domestic abuser in a campaign ad, it’s easier.