Occum’s Razor, I would say that Roseanne Barr was a democrat while successful in Hollywood.
It’s a requirement, in fact. So I’m sure she was.
Drew Carey talked about being conservative once, and how he defended smoker’s choices to keep smoking. POOF.
I recall an interview she had where she declared herself more a Communist than anything else.
Roseanne ran for the Green party presidential nomination in 2012. She came in second to Jill Stein. Another real loon.
So no, Roseanne is neither a republican or conservative.