Joe Rogan is not affiliated with any political party, but has been described as mostly having libertarian views. He has described himself as being "pretty liberal" and supports gay marriage, gay rights, women's rights, recreational drug use, universal healthcare, and universal basic income, while also supporting the Second Amendment. He has also criticized American foreign policy of military adventurism.
Rogan endorsed Ron Paul in the 2012 U.S. presidential campaign and Gary Johnson in the 2016 U.S. presidential campaign.
Could it be you are thinking of Seth Rogen instead of Joe Rogan.? 8>)
He did support Bernie in the primaries, and would have voted for him if he were the Rat nominee.