He’s a novelty candidate.
He is the default choice of someone who dislikes the government, but pays utterly no attention to geopolitical issues or our system of government. Don’t get me wrong, Ron Paul has several conservative issues on the money. He can’t seem to grasp the concept that Israel is the beacon in the Middle East, not the enemy.
I have never used drugs but I know people who do including some family members. I believe many and possibly all of them would enthusiastically campaign for Ron Paul should they sober up long enough to realize he was for legalizing their drug of choice.