Walker lost because he had no strategy. There was no David Axelrod for the Walker campaign; Scott Walker hired Scott Walker to be his David Axelrod.
...A presidential candidate has a more-than-full-time job: being a candidate. He or she does not have time to follow ever-changing electoral dynamics. So when a candidate without a good strategist is faced with Supreme Court decisions on gay marriage, questions about the legality of abortion to save the life of the mother, the rise of birthright citizenship as an issue or, say, the ascendency of Donald Trump, that candidate will flail.Sounds plausible to me. Of course I read many comments from Wisconsiners about how horrid Walker was and predicting his failure. However, you can always predict the failure of a presidential candidate, and 95% of the time you'll be right. Only one person is going to make it to the White House, and all the others will reward your dour predictions. Predicting the winner is hard, predicting a loser is like hitting the broad side of a barn. I guess Walker hit that barn pretty hard.
...Or did he tank because he frequently looks like a doofus?