Sen Joe Biden, originally uploaded by Center for American Progress Action Fund.

First came the 3 a.m. phone call. Now comes the 3 a.m. text message.

If Barack Obama’s pick for vice president taught us anything, it’s that the Democrat nominee for president will stay up late to get the job done. His text message naming Sen. Joe Biden as his VP picked arrived at 3:04 a.m. on my phone.

Symbolic? I’m not so sure. Interesting, nonetheless.