They love to talk politics with an dismissive and authoritative tone - as if they are some powerplayer, just because their congressman talked to them (or just groped them in a supply closet). They often refer to their congressman to other people by his/her first name (like they're best friends)
In actuality, these corn-fed midwestern kiddies lick envelopes and collate mass mailings for less than minimum wage, but they strut around Capitol Hill in hand-me-down "church clothes" like they're a Kennedy.
It's truly painful when they "discover" a neighborhood or bar/club and try to recommend it to a local as if it didn't exist until that over-glorified tourist lays eyes on it.
A Hillite could be considered closely related to the bridge and tunnel crowd in NYC