Doctor Refuses To Treat Patient That Doesn't Support Tort Reform

This article has made the rounds, but I wanted to comment on it:

"RICHLAND, Wash. - A doctor in Washington state has dropped a patient because she refused to sign an initiative to limit malpractice awards."

I believe that people should have the right to decide who they do business with on just about any grounds.  But I wonder where doctors like this will draw the line?  Will they refuse to treat Democrats?  Or Libertarians?  Or Ralph Nader?

Personally, I wouldn't want to be treated by a physician who is that terrified of being sued for malpractice.  Kind of sends the wrong message about his competence, doesn't it?