The final bill for Proposition 8 arrived Monday, it topped $83 million, according to campaign filings. That is the largest tab ever for a social measure in the nation's history.

Proposition 8 overturned a May California Supreme Court ruling that allowed gay and lesbian couples to marry in the state by constitutionally defining marriage as a heterosexual union. Fifty-two percent of voters approved the amendment on November 4. Gay marriage supporters have filed several lawsuits asking the state Supreme Court to invalidate the measure, while opponents are seeking to nullify about 18,000 gay marriages performed during the June-to-November window.

The final filing details more than $28 million last-minute donations by companies, individuals and churches.

The documents show proponents of gay marriage with a slight monetary edge.  They raised $43.3 million in 2008, while Proposition 8 supporters raised $39.9 million.

Several prominent Democrats gave generously to the No-on-8 campaign. San Francisco Mayor Gavin Newsom donated $20,000 from his 2010 exploratory committee for governor. Newsom, a strong supporter of gay marriage, infuriated opponents when he first allowed gay and lesbian couples to marry in San Francisco during the winter of 2004. House Speaker Nancy Pelosi also donated $20,000 from her re-election account.

A January 30 report by the Church of Jesus Christ of Latter-day Saints (the Mormons) lists more than $190,000 in expenses by the church in support of California's gay marriage ban.

Mormon leaders had previously recorded only $2,078 in contributions.

In November, the California Fair Political Practices Commission agreed to investigate a complaint by Californians Against Hate, a gay rights group that pushed for full disclosure of monetary support of Prop. 8, that alleged numerous contribution violations to the campaign to ban gay marriage by the Utah-based Mormon Church.

Church leaders have previously denied any monetary involvement in the campaign, saying their members acted of their own accord in sending millions – by some estimates more than $25 million – to fight for the gay ban.

“The Church of Jesus Christ of Latter-day Saints put zero money in this [the passage of Prop. 8],” Don Eaton, a Mormon Church spokesman, told KGO TV, an ABC affiliate in November.

Church leaders justified their $190,000 in-kind contribution by saying it represented a tiny fraction of funds raised.

“The value of the Church's in-kind contribution is less than one-half of one percent of the total funds raised for the Yes on 8 campaign,” Kim Farah, a church spokeswoman, told The Associated Press.

The church filing lists tens of thousands of dollars for expenses such as airline tickets and hotels for its leaders, along with nearly $97,000 paid to church employees.

“They said they reported all their travel,” Fred Karger, founder of Californians Against Hate, told the Los Angeles Times, “now, when there is a [complaint filed] they disclose 25 Southwest tickets just in October. They were required to report this [in an earlier filing].”

Focus on the Family, the Colorado Springs-based evangelical group led by Rev. James Dobson, reported over $650,000 in cash and services in support of the anti-gay measure.

The names of about 530 late donors were also made public on Monday. Previously, the measure's backers had sued to keep the names secret, but on Thursday a federal judge ruled against them. and the National Organization for Marriage, the principal backers of Prop 8, had argued that the anonymity was necessary because donors were being harassed. U.S. District Judge Morrison England Jr. disagreed. Much of the harassment alleged in the complaint turned out to be First Amendment protected free speech, such as boycotts and protests, the state said.