The Land of Lincolner tells ABC News’ Charlie Gibson that he plans to return to his pre-presidential candidate life if he comes up short on November 4.

“I’m a relatively young man. They say there’s no second acts in politics, but you know, I think there are enough exceptions out there that I think I could envision returning to the Senate and just doing some terrific work with the next President and the next Congress.”

Also defends his 30-minute TV buy, vows to work with Republicans if president even if he gets a majority in the House and Senate.

Watch video above. Read more excerpts here.