Nah. I do buss. with a number of production companies and I have actually overheard conversations where they are cursing Obama’s name. The funniest “advice’ I got from a closet Republican who works for one of the most liberal shows on CBS said “drive a Prius and they won’t even suspect you” :)
It must be frustrating though to find yourself having to bite your tongue when someone starts to unload on conservatives in general. I would think that you feel you are almost living a double life especially when Hollywood is overwhelmingly liberal. I know there are Conservatives in Hollywood, but only a few, that's if you can figure out who they are.