He sat there. Wallace gave him the last word after most forgot he was even on. His response was, (paraphrasing) he learned in law school to remain quiet when your opponent was damaging themselves. And she was.
At some point in there she said something to the effect, in the past several years unemployment has come down from 11%. I waited for someone to correct or ask a follow up, but no one did.
Unless he's getting a few minutes of face-time on one of the networks or major cable news outlets, I never see or hear about what he saying or doing to defeat Obamah and take back the senate.