ambassador john bolten is here to announce his pick and ambassador bolten, i'm not going to steal youri know who it is. tell us who it is, sir. >> i'm going to support mitt romney, i've thought hard and this is important decision for the republican party and i believe it's absolutely critical to defeat barack obama in november. he think our country would be in dire straits, domestically and internationally if he gets another four years and i think governor romney is the person who can best lead the party, best ar tech-- articulate our conservative principles. >> and newt gingrich and senator santorum describe him as a moderate. do you agree with their critique in many instances? >> looking at the whole range of perspective candidates there only one met my test as an ideal conservative and he decided know the to run. >> greta: is that you. >> i guess he's sitting here. and so faced with everybody else, i followed the way that the william f buckley, jr. test, find the most conservative candidate capable of getting elected and there are obviously two variables there. in the words of the o

he's gotten endorsement of nicky haley the governor, and ambassador bolten 0en his behalf and senator johnquestion, do the endorsements really help? there's been a new research, a new study from pew research, that shows that there's not a huge difference maker out there, because, chris christie was thought to be the one that really would move the political needle for mitt romney, and his campaigning may make a difference, but the endorsements alone don't seem to be making much of a deference. here is a look at the numbers. from pew, there is a couple of endorsements that appear to mean an awful lot. the numbers are-- >> george w. bush and sarah palin are the two on the top of the charts that would make you more likely to vote for a candidate, but look at the bottom. those are small pictures, but they are john mccain, herman cain, and donald trump at the very bottom in terms of-- >> well, look at the numbers. >> dave: swaying. >> alisyn: even at the top, george bush and sarah palin not that different and notice that they're significance. most people say it makes no difference in how they vo