 Coming up on WTOP, we'll hear from the director of the Center for Politics at UVA, Larry Sabato. He says he's been watching presidential debates for more than 60 years, and last night was the worst he's ever seen. Stay with us for that conversation. For Mervis Diamond Importers, this is Ronnie Mervis. My friends ask me, what's better, natural mined diamonds or lab-growns?