Oppressed Republicans

Instapundit links a Nashville reporter's musings on the purported "bigotry" against Republicans exhibited by cosmopolitan liberals. Pigeonholing is always tiresome, of course, but if it counts as "bigotry" to think badly of people because of a set of beliefs they've chosen to share, then isn't the use of the word "bigot" as a pejorative term, well… bigoted?