In an interview with Bill Hixon of The Beach Reporter (8/22/2017), Bill Envall says,
I think that’s probably one of the main reasons why I’ve worked as long as I have … I do a clean and relatable show. I don’t do politics or religion … I figured we get bombarded with that stuff all year and every day. When you come see my show, that’s the last thing I want you have to listen to.
Yes, it’s a short blurb, but it reiterates my point that most comics avoid politics like the plague.