That's what Congressman Joe Sestak (D), who is continuing to mull a run for the Senate in Pennsylvania next year, said this morning on CNN's "State of the Union."

Here's the transcript:
SESTAK: I'm not sure he's a Democrat yet. And that doesn't mean we don't want bipartisanship. My gosh, I won in a district that was 53 percent Republican, 36 percent Democrat

Check out the video below. Oh, and it's worth noting that Sestak must have been pretty happy with the interview; he posted the video on YouTube and tweeted a link to it.