You have no comprehension of politics if you take that statement at face value.
Had Trump said he thought Palin was an ignorant bimbo (which she is) he would have alienated the people who are too dumb to realize she's an ignorant bimbo.
By saying what he did he brought them into his camp. In any administration Palin would be a 100% liability and Trump has a 0000% record of surrounding himself with people like that.
The guidebook on this was written 2080 years ago and can be found in the books of every successful politician from Richelieu to Trump.http://www.nytimes.com/2012/07/29/books/review/how-to-win-an-election-by-quintus-tullius-cicero.html?_r=0
But don't let that interrupt your mutual jack off festival.