He was spurned in the Republican primary process, but he is also a two term governor of a state and a well known advocate for libertarian causes.
Gary Johnson has been selected to run as the Libertarian Party candidate for Congress, providing an alternative to President Obama and Gov. Mitt Romney.
Mr. Johnson has credibililty since he was governor of New Mexico and has credentials as an advocate for issues from marijuana legalization to keeping the nation out of foreign entanglements.
I don't think his impact is huge, and the votes he gets are not likely major party type voters to begin with.
Gary Johnson wins Libertarian Party presidential nomination – CNN Political Ticker - CNN.com Blogs