Personally I think we'd all be better off if we completely avoided the whole 'using stupid stereotypes' school of electoral analysis entirely, however controversial such a move would be.
Using another school of electoral analysis is way too hard. It's much quicker for us to say that all people in rural areas are inbred hicks who smell funny and have guns and that all Hollande voters in Paris are really, really wealthy elitist bobos!
edit: and that all Panzergirl voters are Nazis who are too stupid to function