A new PPIC poll (2,001 RVs, 1/12-19, MoE +/- 2%) of the landscape in California shows that former Rep. Tom Campbell's (R) decision to switch from the gubernatorial to the Senate race has changed the dynamic of both races, as he now leads a more crowded Senate field while former eBay CEO Meg Whitman has jumped to a commanding early lead in her bid for governor.

In general election matchups, meanwhile, Democrats are favored in both. But neither candidate -- Attorney General and former Gov. Jerry Brown and incumbent Sen. Barbara Boxer -- tops 50%.

Republican Primary Matchup: Governor
Whitman 41
Poizner 11
Und 44

Republican Primary Matchup: Senate
Campbell 27
Fiorina 16
DeVore 8
Und 48

General Election Matchup: Governor
Brown 41 -- Whitman 36 -- Und 23
Brown 44 -- Poizner 29 -- Und 27

General Election Matchup: Senate
Boxer 45 -- Campbell 41 -- Und 14
Boxer 48 -- Fiorina 40 -- Und 12
Boxer 47 -- DeVore 39 -- Und 14

Boxer has a 49 percent approval rating, with 41 percent disapproving. Independents narrowly approve of her job performance by a 46-42 margin. Term-limited Gov. Arnold Schwarzenegger is struggling with just 30 percent of voters approving of his performance, while 60 disapprove.

The primaries for Senate and governor are June 8.

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