PG&E Corp., the parent company of Pacific Gas & Electric Co., and Edison International, whose subsidiaries include Southern California Edison Co., have contributed nearly $23.6 million to defeat the proposition. Sempra Energy, parent of San Diego Gas & Electric, has chipped in $104,000.

Supporters have raised $3.1 million. Most of that—$3 million—has come from Peter Sperling, vice chairman of Apollo Group, which operates the University of Phoenix, Western International University, the College for Financial Planning and the Institute for Professional Development.

Both utilities said they support renewable energy development but believe Proposition 7 is bad public policy.

"We are concerned that Proposition 7 will disrupt renewable markets, raise rates and threaten reliability," said Lauren Bartlett, a spokeswoman for Edison.

Jim Gonzalez, chairman of the Yes on Proposition 7 campaign, said the utilities' opposition to the measure was "quite stunning."

"California is blessed with renewable resources in wind, solar and geothermal, and the utilities know this," he said. "What is being asked of them is not unreasonable. ... It is stunning that they would spend this kind of money to avoid helping California and America reach energy independence."

The groups faced a Thursday deadline to report their six-month fundraising totals to the Secretary of State's office. The filings also included donations of $5,000 or more made since June 30.

The fight over Proposition 8, the gay marriage ban, has drawn nearly $9 million in donations. Both sides predict they'll raise considerably more before voters go to the polls in the Nov. 4 general election.

"Our opponents have said they will raise and spend $10 million to $15 million," said Steve Smith, a campaign consultant for the proposition's opponents. "The generous support of our donors means we will more than match them and have a full communications campaign for California voters."

The measure would overturn a state Supreme Court decision that said California's ban on same-sex marriages was unconstitutional. The proposition's supporters had raised nearly $3 million through the end of July; opponents had taken in nearly double that amount.

Supporters of Proposition 11, which would strip the Legislature of the power to draw its districts and give that role to a commission, reported raising $5.6 million. Much of that money came from supporters of Gov. Arnold Schwarzenegger, whose ballot measure committee, the California Dream Team, has give the Yes on 11 campaign nearly $2.5 million.

Opponents, calling themselves Citizens for Accountability—No on the Power Grab—reported raising only $5,000 from the California Democratic Party.

"We're just getting started," spokesman Paul Hefner said.

Opponents of the redistricting initiative have characterized it as an attempt by Republicans and corporations to increase their clout in Sacramento by taking the power to draw legislative districts—and determine the outcome of legislative races—away from the Democratic-dominated Legislature.

But Kathay Feng, executive director of California Common Cause, one of the political reform groups supporting Proposition 11, said the Yes-on-11 campaign is a bipartisan effort with a lot of small contributors.

She said the opponents have been "selective in talking about who the donors are to the Proposition 11 campaign. They would love the public to believe it's one-sided, when in fact there have been lot of prominent Democrats who have donated."

Animal-rights advocates have raised $4.3 million to support Proposition 2, which would establish a set of tethering and enclosure standards for farm animals. Opponents have collected almost $2 million, with most of the money coming from chicken and egg ranchers and distributors.

Proposition 4, the third attempt since 2005 to require a waiting period and parental notification before a minor could get an abortion, has drawn nearly $6.7 million in contributions, with opponents getting almost twice as much as supporters.

Supporters of two anti-crime measures, propositions 6 and 9, have big fundraising leads over opponents. Proposition 6 would require new state spending to combat crimes and gangs. Supporters reported raising $1.6 million

Proposition 9 would require authorities to take victim safety into account when considering granting bail and parole. Its supporters reported raising $4.8 million.

A committee opposing both proposals reported raising only $85,000.

Backers of Proposition 5, which would require additional state funding for treatment programs for nonviolent drug offenders, reported raising more than $3.3 million. Opponents, People Against the Proposition 5 Deception, did not file a donation report online.

There also are bond measures on the ballot to pay for high-speed rail, children's hospitals, rebates to encourage people to buy alternative-fuel vehicles and home and farm loans for veterans.

None of the bond measures has drawn organized opposition yet.