Except Sarvis was a Democrat plant. http://www.theblaze.com/stories/2013/11/05/revealed-obama-campaign-bundler-helping-fund-libertarian-in-tight-va-gubernatorial-race/
Him and any other 3rd party will realistically only harm Right candidates. Left is united. The Right is splintered because of GOP defeatists, so they will be only voters motivated to defect vote.
“Don’t stop believin”.