This Holy Man is not dictating to people on how to vote on a particular issue, he is teaching them how to think in the face of media and political bias that seeks control rather than freedom.
If a political party can control the outcomes of elections due to prejudice, fear, misinformation and discrimination it is not a free country anymore.
The marriage amendments to state constitutions are based in fear and imposed by religion. There is separation of church and state in the USA for a reason. It is not to remove religion from people's lives, it is to remove discrimination from the law.