I've been thinking about this possibility for some time, just as many other Madisonians surely have, and I've got to say I'm pleased to hear he's testing the waters. I'm not saying he's the right man for the job (yet), but his inclusion in the process would certainly help to bring the party back to their fundamental democratic roots (and end the horrific middle-moving tendencies of the DNC).
More importantly, I think what the left needs most is a good dose of charisma. Russ certainly is aware of this missing factor - in the above article he mentions Clinton, Geedub and Schwarzenegger as imperfect people but perfect candidates due to their ability to connect with common people. Obviously Kerry had a hard time doing this. So did Gore, to some extent. I think Russ is a candidate that may be able to connect.
Can I smell a Feingold/Obama (or Obama/Feingold) ticket? Or maybe a ticket with Edwards?