Former New Mexico Gov. Gary Johnson, who ditched his Republican bid for president in December, captured the Libertarian Party's nomination on Saturday in Las Vegas, adding a third party candidate with some name recognition to the 2012 race. Mr. Johnson is likely to be a sideshow in the presidential contest. He will be less well-funded than President Barack Obama and Republican Mitt Romney, while holding policy positions often considered outside mainstream political thought. Among other things, he has called for the elimination of the Education Department, cutting 43% of federal spending and instituting a 23% national sales tax while eliminating the Internal Revenue Service. He also backs gay marriage and supports the legalization of marijuana.