A new Field Poll shows that state Attorney General Jerry Brown is well-positioned for a return to the governor's office, as he leads by double-digits in both the Democratic primary and in matchups with all three GOP opponents.

Democratic Primary Matchup
Brown 47 (+21 from last poll, March)
Newsom 27 (+11)
Undecided 26 (-32)

The March survey included several other potential Democratic candidates, including Los Angeles Mayor Antonio Villaraigosa. Now, Brown leads in all regions and age groups; Newsom scores best among women voters, but trails even there -- 40-31. A three-way race Sen. Dianne Feinstein is also tested. She would lead the field with 40 percent, followed by Brown (27 percent) and Newsom (16 percent).

Republican Primary Election Matchup
Whitman 22 (+1)
Campbell 20 (+2)
Poizner 9 (+2)
Undecided 49 (-5)

General Election Matchups
Brown 50 -- Whitman 29 -- Und 21
Brown 48 -- Campbell 27 -- Und 25
Brown 50 -- Poizner 25 -- Und 25
Newsom 40 -- Whitman 31 -- Und 29
Newsom 38 -- Campbell 33 -- Und 29
Newsom 39 -- Poizner 30 -- Und 31

Both Democrats have stronger name recognition, though San Francisco Mayor Gavin Newsom is viewed less favorably.

Favorable Ratings
Brown 44 / 29
Newsom 30 / 40
Whitman 18 / 14
Campbell 20 / 21
Poizner 22 / 17

The overall sample was 1,005 registered voters (MoE +/- 3.2%), with primary subsamples of 496 Democrats (MoE +/- 4.5%) and 373 Republicans (MoE +/- 4.5%). The survey was conducted from September 18 to October 5.