Obama on social issues and more conservative than Romney on fiscal issues. He says same-sex marriage is a constitutional issue and should be legal, supports legalizing marijuana usage, and also says he would abolish the Internal Revenue Service. To Schiller, Johnson represents a possible threat that should worry the Romney campaign. I think you can argue that Gary Johnson will siphon off Romney votes, she told CNN, arguing that hardcore conservatives who consider the former Massachusetts governor to be too moderate could opt for the Libertarian. Do the math: CNN Electoral Map If Colorado gets closer, I think it will matter if Johnson's in the race, Schiller said, noting that 1,000 or 2,000 votes from Romney -- it makes a difference. To counter that dynamic, Romney's campaign must make the argument that a vote for Johnson is the same as voting for Obama, according to Schiller. Any time you have a third party in a very tight race and that third party candidate seems a lot more like Romney than he does Obama, then if you 're Romney, you have to discredit that candidate, she said. However, Johnson's campaign told CNN in September that some of the candidate's support came from former Obama supporters in Colorado, New Mexico and Nevada. By running as the Libertarian Party candidate, Johnson hoped to gain the support of the relatively small but fiercely loyal following of Ron