As I mentioned earlier, we have our TPMtv crew (Managing Editor David Kurtz and Video Editor Ben Craw) on location in Chicago today and tomorrow. And they'll be bringing you regular video updates and interviews through Wednesday morning. This afternoon, David interviewed Obama spokesman Bill Burton, who you'll likely recognize from numerous TV appearances and press statements and another guy you might not recognize, Jon Carson, the Obama campaign's National Field Director. We've all heard about the big ground gain Obama's got in store. Well, the Field Director is the person in charge of all that.

You can see both interviews in this post at the TPMtv website.