Most Americans still have no idea who he is, but former Utah governor and ambassador to China Jon Huntsman a Mormon who supports civil unions and "cap and trade" is the (soon-to-be) Republican presidential candidate "top Democrats" fear most, according to Jake Tapper. (Which is precisely why President Obama tried to get him out of the picture by shipping him off to China in the first place.) But, considering his aforementioned support for civil unions, efforts to combat climate change, and service under Obama, they don't think he can make it through the primaries. Instead, their outside-the-box prediction is that Mitt Romney will get the nomination, and they are only somewhat concerned about him.
Top Democrats: Huntsman Would Be Toughest to Beat in 2012; Won't Win GOP Nomination [Political Punch/ABC News]