After inviting Trump to speak (bad!), then booing him (okay!), the current leader for the Libertarian Party presidential nomination is this guy, a retired professor who previously made headlines by inviting Milo Yiannopoulos to speak on his campus.
Update at the Libertarian convention: Michael Rectenwald, a commentator from the right-libertarian Mises caucus, took an edible before joining a post-Trump candidate presser. He was uneasy and left halfway through.
On Sunday, he admitted that he took an edible before going onstage, unaware of sked.