Gary Johnson and the Libertarian Party are a joke and have nothing to do with Ron Paul who in 2008 endorsed the Constitution Party NOT the Joke Libertarian Party.
Ron Paul was the LP's nominee for President in 1988, I'd hardly say he has nothing to do with them. He ran as a Republican to get elected to Congress, but he has close ties to the LP and most "big L" card-carrying Libertarian Party members are big Ron Paul fans who would love to run him for President again.
Yes, Paul's pro-life, and most of the LP is pro-choice, but the scary thing is that Paul is probably more conservative than the average Paulbot who worships him. I'd be willing to bet that at least 70-80% of the people who voted for Gary Johnson were Paulbots. I know several Paulbots who voted for Gary Johnson, including one who lied and claimed he was going to support Romney in the general, then admitted later that he pulled the lever for Johnson.
Ron Paul tried to stay neutral in the 2008 presidential election. He finally endorsed the Consitution Party nominee only because Bob Barr wouldn't shut up and kept trying to cash in on Paul's personality cult by retroactively claiming he was Ron Paul's BFF when the two served in Congress together. Paul knew it was BS, and endorsed the Constitution Party candidate just to make it explicitly clear he was NOT supporting Barr.