Branstad: Christie is ‘rock star’ | Des Moines Register Staff Blogs <excerpt> Gov. Terry Branstad said today that New Jersey Gov. Chris Christie is a rock star. And, by the way, its too early to judge the GOP 2012 presidential field, he said. He was asked to comment on the news from the Associated Press that some Iowa Republicans are courting Christie, possibly indicating some dissatisfaction with the current crop of candidates.