Saying "I haven't seen anything like what's happening in Colorado since Marco Rubio in Florida," Sen. Jim DeMint, R-S.C., on Wednesday endorsed Ken Buck for the U.S. Senate.

DeMint, chairman of the Senate Conservatives Fund, called Ken "a great candidate who's going to embrace the grassroots activism" that is rising up across the country. "Ken has the character and integrity to stand up for the principles of freedom in America," DeMint said. "He can be one of the stars in the Senate."