AP:

A new Field Poll shows California Attorney General Jerry Brown with a strong lead in next year’s race for governor, even before he’s declared himself a candidate and despite months of campaigning by his Democratic rival and three Republicans vying for their party’s nomination.
The poll released Thursday found that Brown, the former governor, or fellow Democrat Gavin Newsom, the mayor of San Francisco, would fare well against any of the three Republicans.
It found that half of Republican voters had yet to make up their minds in the contest between former eBay chief executive Meg Whitman, former congressman Tom Campbell and state Insurance Commissioner Steve Poizner.
Among Democrats, Brown has a comfortable 20-point lead over Newsom with a quarter of voters undecided. U.S. Sen. Dianne Feinstein would trounce either if she opted to get into the race, the poll found.