enlarge John Ewing/Staff Photographer

Frank Schubert, Yes on 1 campaign director, and fellow supporters celebrate their apparent win Tuesday night.

PORTLAND — Maine voters on Tuesday narrowly voted to repeal a law that would have made the state one of a handful that allow same-sex couples to marry.

At 1 a.m., with 87 percent of the state’s precincts reporting, 52.8 percent of Mainers had voted to repeal the state’s same-sex marriage law, versus 47.2 percent who voted to keep it.

Yes on 1, which led the people’s veto effort, proclaimed victory at about 12:30 a.m., as supporters gathered on a small stage at the Eastland Park Hotel behind Frank Schubert of Schubert Flint, the public relations firm hired to work on the campaign.

“I am very proud to tell you tonight that Question 1 has passed,” said Schubert. “Thank you so much to the people of Maine. To the thousands of volunteers who have worked day in and day out. It has all come together tonight.

“The institution of marriage has been preserved in Maine and across this nation,” he said, pumping his fist into the air.

Marc Mutty, Stand for Marriage Maine campaign manager, took the podium after Schubert: “What a team we’ve had. We’ve worked hard. We’ve struggled, we’ve worked against tremendous odds, as we’ve all known.

“It’s been the little guy against the big guy in terms of resources, financial resources,” said Mutty. “We prevailed because the people of Maine, the silent majority, the folks back home spoke with their vote tonight.”

A prayer followed.

At 12:30 a.m., a defiant Jesse Connolly, campaign manager for No on 1/Protect Maine Equality, spoke to several hundred supporters who lingered at the Holiday Inn By the Bay. Connolly did not concede, saying the campaign always knew the election would be close. Workers would be counting votes all night long, he said.

Connolly said supporters of same-sex marriage would keep fighting and keep working for their cause.“We’re not short-timers, we’re here for the long haul,” he said.

But by 2:30 a.m., Connolly issued a concession statement saying that though "hundreds of thousands of Maine voters stood for equality. ... in the end, it wasn't enough."

Pollsters and pundits had predicted a thin margin on the state’s same-sex marriage vote, and the results  proved them right.

Gov. John Baldacci – who watched returns come in at the No on 1 party – signed the bill into law in May, but opponents of same-sex marriage quickly gathered well more than the 55,000 signatures necessary to call for a public vote.

Maine would have been the sixth state in the country to allow gay and lesbian couples to marry.

Massachusetts, Connecticut, Vermont and Iowa already allow gay marriage, and New Hampshire’s new law will take effect in January.

The fight over the issue touched on religion, civil rights, schools, sexuality and family.

The two campaigns spent more than $7 million, with same-sex marriage supporters outspending opponents. Both sides said the vote will have national implications that will influence future same-sex marriage battles in other states.

The crowd at the No on 1 party was several times larger and louder than the competition. In the lobby outside the ballroom, Roger and Peggy Marchand of Gorham set up cardboard cutouts of male and female couples and brought along their camera for those who wanted to get a snapshot.

“We have high hopes,” Roger Marchand said.

While gay-marriage supporters have had success in New England and Iowa in the last five years, most of the country still opposes same-sex marriage.Nationwide, 30 states – including California – have voted to ban it.

The push to legalize same-sex marriage in Maine began in January, when hundreds of activists gathered at the State House to announce that Sen. Dennis Damon, D-Trenton, would...