Much of the libertarian population is split on him.
Personally im not sold on him, nor would i vote for him ATM. He is the best member of the senate, but he's too neo-con for my liking.
In what sense?
Let me preface my comments by saying again that i expect my opinion of him to change in the future as I learn more and see more of his votes, however, i know he did vote for some sanctions on Iran, he's a little too Israel friendly for my liking as well. In comparison to his father, he seems more interventionist, and I dont know if he, as president, would be willing to massively slash overseas military spending and bring back troops from bases across the globe.
