On “Fox News Sunday,” South Dakotan says he’s not actively seeking the slot aside Romney on the ticket and/but he won’t rule it out.

Thune: “I don’t think you ever rule out opportunities or options when you’re involved in public life and you say you want to make a difference and you’re serious about that, obviously, then you don’t foreclose options. But in my view, I have a job to do in the United States Senate, I like what I’m doing.”