ThinkProgress has posted a video of Sen. Scott Brown (R-MA) asking a past donor for continued political sort.

It’s the kind of transaction that happens between senators and political contributors numerous times a day.

But this one is more interesting than the typical “ask” by a politician because the guy he’s asking for continued support from is none other than David Koch, one of the billionaire brothers who runs Koch Industries and contributes generously to conservative causes.

Brown and Koch talked at an MIT event where the university’s new cancer research center was officially unveiled. It was built with $100 million from Koch. The billionaire was interviewed by the New York Times for a story in which you learn that the cancer center will be a fascinating collaboration of cancer researchers and engineers.

Anyway, here’s part of the conversation between the men.

BROWN: Your support during the election, it meant a ton. It made a difference and I can certainly use it again. Obviously, the –

KOCH: When are you running for the next term?

BROWN: ‘12.

KOCH: Oh, okay.

BROWN: I’m in the cycle right now. We’re already banging away.

The liberal ThinkProgress’ headline for the post is “Scott Brown Begs David Koch For Money.” Actually, he doesn’t really seem to be begging as much as doing the standard politician’s version of “the ask.”

And if you’re Brown, who saw spending in the special election he won to fill the seat vacated by death of Sen. Edward Kennedy, come in at around $23 million, you’re doing “the ask” all the time.

Actually, if a senator didn’t ask a billionaire for money, now that would be man bites dog, i.e. news. Copyright 2011 National Public Radio. To see more, visit http://www.npr.org/.