Probably, but business wise it makes no sense for any entertainer to be supporting political candidates in our hyper-partisan times. Why alienate half your audience? Granted, older washed up stars can add a few years to their faded careers by coming out for something liberal - a cause or candidate. It gets them some charity crumbs thrown their way by the socialist Hollywood establishment. So that's one instance where it makes sense, I guess.
Absolutely, I'd keep my mouth shut.