I never got that, either. #TRE45ON wouldn't even LOOK at one of them if they passed on the street, much less stop and have a conversation. It was said that ppl voted for W because "he's a guy you could sit down and have a beer with," IOW an average guy. But #TRE45ON? He would not only NEVER have a beer (or Diet Coke) with you; he wouldn't be caught dead in the same room as you.
But yeah, they're against "elitism."
I think that's just a dog whistle for "better educated," or "better job than I have" or "has a newer car than mine."