Only 38% of Republican primary voters say they're willing to support a candidate for President next year who firmly rejects the birther theory and those folks want Mitt Romney to be their nominee for President next year. With the other 62% of Republicans- 23% of whom say they are only willing to vote for a birther and 39% of whom are not sure- Donald Trump is cleaning up. And as a result Trump's ridden the controversy about Barack Obama's place of birth to the highest level of support we've found for anyone in our national GOP polling so far in 2011.