This morning, Obama met with a handful of House members who are undeclared Superdelegates: Gabrielle Giffords (Ariz.), Dan Boren (Okla.), Mike McIntyre (N.C.), Zack Space (Ohio), Charlie Melancon (La,), Tim Mahoney (Fla.) and Jim Costa (Calif.).
What makes these pols interesting? They are up for election (as are all members of the House), they're junior members (read: haven't attained huge institutional advantages of incumbancy), and they're in swing districts.
As I mentioned yesterday, the reason Hillary's having a hard time making the case to SDs is because they, unlike gullible voters and media, aren't buying her line about being more electable. Obama has so far shown that his name is far more of an asset in these reddish-purple districts, and since it's their arses on the line, they are going to choose the candidate they think helps them the most. If they begin to endorse Obama, that will be most telling.