I am not underestimating him. I have long said that Walker is probably the best positioned candidate on the GOP side, in terms of appeal across the various wings, his relatively unknown name to most of the low information voters, his “every-man” fake persona, and his financial backing by the Kochs.
But so far, his campaign has been pretty bleak. He jumped out to an early lead, (never good, especially in the GOP today…see 2012 frontrunners), made a series of gaffes, and then got put on the sidelines by his own staff, He has been the very last candidate to comment on anything in recent weeks. Even his announcement has been met with a great big yawn as the media is bored with campaign announcements and is ga-ga over Trump.
I still think he wins Iowa, but he doesn’t seem to be making much of an impression beyond there. And while he has the money to go the distance, he is very green at national politics. I’d say there is a pretty decent chance that he self destructs before the convention right now.