I do know that the illegal alien vote, here in Orange County, cost B1 Bob the election (aided by a GOP sell out).
When I lived in HB, I would regularly bring my passport when I went to vote. I would just open it and innocently ask if they wanted to see my ID and proof of citizenship. The older volunteers would just snicker and grin, the younger more 'progressive ones' would actually get all huffy with me.
I thought it was great fun and always started conversation going in the lines...heh heh heh.