The challenge that was being made to his is that, as a guy from a “Northeast liberal state,” how does he think he could compete in the primaries in the South. I guess he figured that, because Delaware had been a slave state, his state has a lot of black people, he would get Southern votes. He is not just the typical Northeast lib. Yes, he is a nitwit.
Thanks for explaining. Actually, the answer does kinda make sense given how stupid the question was.