"The race was almost split 50/50. Obama got less than one percent of the votes more than Mitt Romney. Of interest, libertarian Gary Johnson got right at one percent. Gary who? Right. How did a guy with almost no presence during the primaries get one percent of the votes? The only other Libertarian to get this much traction was Ed Clark in 1980 with 1.1 percent. But this wasn’t so much a victory for the Libertarian Party as it was a loss for the GOP. How did Gary Johnson get so many votes? Ron Paul. Sorry, but that’s just the truth.
Most disillusioned Ron Paul supporters chose either to not vote, to vote for Gary Johnson, or to write in Ron Paul even though such a vote would be largely symbolic."
The Average American Voter