Choosing a VP with military experience does not automatically confer Obama with military credentials. What it does offer is two things : 1) It tells the Beltway that Obama has a 4-star general backing him up in the Oval Office. Think about Bush's pick of Cheney. The Cheney pick told Washington insders that an experienced washington hand was available. The media narrative was that this was a solid pick. I see a Clark pick in much the same way.

2) It allows Clark to go after McCain on national security with Obama. When Obama critiques McCain on national security it is possible for some in the MSM to dismiss Obama was naive. When Clark voices the same criticisms it underscores what Obama said.

All thins being equal Obama should have a 15-20 point advantage on the economy, energy, health care, environment, getting us out of Iraq, and change. McCain will keep this race close with the threat of who do you trust in a national security crisis.