Colorado: Mary Ruwart

Former U.S. Rep. Bob Barr won the Libertarian nomination for president Sunday afternoon at the Denver Sheraton.

Barr won on the sixth ballot over longtime Libertarian activist Mary Ruwart 54 percent to 46 percent.

Libertarian National Convention delegates now have to select a vice-presidential candidate. Barr has backed third-place presidential finisher Wayne Allyn Root of Nevada; Root helped Barr secure the nomination by swinging his support to Barr during the last ballot.