SF Mayor Gavin Newsom to run for governor of California

San Francisco Mayor Gavin Newsom (pictured) has made it official - he's planning to run for governor of California.

The 41-year-old mayor used the social networking sites Twitter and Facebook to announce that he was seeking the Democratic nomination to succeed Governor Arnold Schwarzenegger.

Newsom could be facing Attorney General Jerry Brown and Lt. Governor John Garamendi in next year's Democratic primary.

Other Democrats who could be running include Los Angeles mayor Antonio Villaragosa and U.S. Senator Dianne Feinstein.

We wonder if the 71-year-old Jerry Brown, the 64-year-old John Garamendi, the 56-year-old Antonio Villaragosa and the 75-year-old Dianne Feinstein will also be using Twitter and Facebook to announce their candidacy.

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