Notice that he has the greatest number of endorsements. The area where he hasn't broken through is in
1. Christian Fundamentalists, as they miscontrue his religion and values. (He should address this. Read
Why Romney Is Just Fine For Fundamentalists.
2. Tea Party, as they misconstrue the benefits he will provide in lower taxes and the massively increased
efficiency of the government that Mitt will bring about - the latter is necessary or lower taxes are just a
fantasy. He should be massively supported by Tea Party participants.
Senator John Thune (who was considered an excellent possible candidate for President)
President George H. W. Bush
Former U.N. Ambassador John Bolton
And others in each state
Many more: I couldn't find on Romney's site a central listing. See in Press Releases.