Former two-term governor Jerry Brown leads a potential Democratic primary field with 31% of the vote, according to a new poll by Tulchin Research. Brown currently serves as state attorney general, and also is a former secretary of state.

Tested against Brown were San Francisco Mayor Gavin Newsom, Los Angeles Mayor Antonio Villaraigosa, Lt. Gov. John Garamendi, and Superintendent of Public Instruction Jack O'Connell.

Brown 31
Newsom 16
Villaraigosa 12
Garamendi 11
O'Connell 6
Undecided 20

Garamendi announced this week he is instead seeking a soon-to-be vacant U.S. House seat in California's 10th District, which Rep. Ellen Tauscher is vacating to serve in the State Department.