Jerry Brown issued a statement today saying that he plans to file papers today to form an exploratory committee for governor.

Brown leads all other candidates in the latest Rasmussen poll, even though he's not officially in the race. But he has been amassing a war chest under the auspices of a reelection fund for attorney general, money that can be rolled into a gubernatorial bid.

What the exploratory committee does is allow him to raise greater sums from individual donors: ?51,800 per person, or $25,900 for the primary and $25,000 for the general election. Donors to his attorney general race are capped at $13,000, or $6,500 for the primary and $6,500 for the general election.

As Gavin Newsom is set to campaign on Monday with Bill Clinton, Brown's spokesman, Steve Glazer, is mum about a rollout of endorsements. Steven Spielberg, Jeffrey Katzenberg and David Geffen have each contributed to Brown in recent months, but Glazer declined to say if they will be throwing any fund-raiser anytime soon. "Stay tuned," he said.

Update: Nick Clemons, Newsom's campaign manager, said in a statement: "We're looking forward to a robust discussion about the issues facing California and who is the best person to take this state in a new direction."

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