A trivia question that will perhaps win you a drink at happy hour tonight (but probably only if you're at a weird politico-economic happy hour in Washington, DC).
Dave Brat, now the Republican nominee for Eric Cantor's seat, is a PhD economist. He'll be the only one in Congress.
So here's the question:
Who was the last one?
Scroll down for the anwer.
Answer: Democrat Tom Lantos from California.