Presidential politicking will be at center stage as Democrats arrive today for their week-long convention in Denver. But on the side stages, they'll see plenty of potential candidates using the event to promote their 2010 campaigns.

Pretty much the entire field of potential Democratic nominees for California governor in 2010 will be in Denver, in their roles as pledged party officials. That includes Lt. Gov. John Garamendi, who has already declared his intent to run, Attorney General Jerry Brown, Los Angeles Mayor Antonio Villaraigosa and Superintendent of Public Instruction Jack O'Connell.

So far, however, it is San Francisco Mayor Gavin Newsom who's pulled off the biggest potential coup. Newsom will host an outdoor concert on Wednesday, underwritten by such corporate deep pockets as AT&T and Pacific Gas & Electric, as well as the Northern California carpenters union and the online activist group MoveOn.com.

The concert, designed to appeal to young people, will honor a handful of organizations of young Democrats, including College Democrats of America.

The entertainment lineup includes Clap Your Hands Say Yeah, Cold War Kids, Silversun Pickups and Nada Surf.

If you can't name a tune by any of those groups, you are probably not a member of one of the organizations to be recognized at the concert: Generation Obama.