Not true. Entertainers' box office, Nielsen, and record sales suffer when they touch the third rail of partisan politics.
Witness the fate of the Dixie Chicks, whose comments abroad about GWB crashed their music career. Those ladies never recovered from that faux pas.
On the flip side, there are countless insider reports of conservatives in the entertainment business who fly under the radar to protect their careers from being trashed by leftist retaliation for their views.
How many times have you seen Freepers say, "I'll never buy another one of his records" after hearing that some popular recording artist supports the left wing agenda?
How many times have you seen people boycott or support retailers, due to some partisan stance of the company? It happens all the time.
It's just a fact. Many consumers make choices based upon an entertainer's or businesses' political views. Knowing this, astute business people steer clear of the area. I know I do, in my own business. I've actually lost liberal customers when they became aware of my politics.