If there were a random guy (I'm envisioning Cash Cab style, only without the staging) who'd ask random folk who their rep was, for a $X prize- people would remember, just in case, wouldn't they?
“To create public awareness. We should ask some questions about breast cancer.”
That's why more Americans don't know their government representatives. It's not a practical trivia question. There's no incentive to know it.

Probably would be more upset at the lack of free trivia if I weren’t just bankrolled for the rest of the month.