http://www.slate.com/articles/news_and_politics/politics/2015/08/donald_trump_is_killing_scott_walker_s_presidential_campaign.html

On paper, Scott Walker is a winner. He doesn’t just govern a blue state—a win in its own right—he’s transformed it, making Wisconsin a vanguard for conservative causes, from right-to-work laws and public education cuts, to voter ID and strict limits on abortion. He’s done all this with affirmation from Wisconsin voters; he beat a recall attempt in 2012 and won re-election in 2014. Even better, at least for his national ambitions, is his affect. He’s not a firebrand and he doesn’t alienate ordinary Americans. Instead, he looks and sounds like a middle manager; an ordinary, almost boring guy who just wants to save you money.