Have you stopped watching a TV show, or listening to a musician due to their political beliefs? Probably. Have you continued to listen/watch/follow an artist in spite of their expressed political beliefs?
Yes, 2 of my favorite musicians wrote and sang songs as well as performed at rallies for a cause I passionately disagree with. While I love their old stuff, I will likely never buy another song or cd by these artists. They likely lost a certain percentage of their fans, but that is their right to do. Similarly, I do not patronize businesses that have political signs for issues/candidates I don't agree with. -- I don't care about the political views of performers, as long as their art isn't about their political views.