He isn't. The question was wether the tea party should vote for Mitt if he got the nomination.
Huckabee kept Romney from getting the nomination last time, and hopefully he does his part this time and endorses the 'anybody but Romney' candidate at some point.
Oh, now this makes sense. Huck still wants to sabotage Mittens. The word about Mitt in the ‘08 election was that his sons and their friends were absolutely obnoxious and alienated all of the other candidates, especially Huck.