Massachusetts’ highest court has ruled that voters will get the chance to overturn the state’s landmark 2003 court decision that deemed banning gay marriage unconstitutional.

The measure will appear on the state’s 2008 ballot if it is approved by the Legislature, after it is considered in a constitutional convention tomorrow.

The ruling resulted from a lawsuit brought by gay-rights supporters who argued that Attorney General Tom Reilly was wrong to approve the ballot measure because they said the state constitution bars any citizen-initiated amendment that seeks to reverse a judicial ruling.

According to the Associated Press, the Court said the proposed amendment is not a “reversal” of the court’s ruling legalising gay marriage but a proposed change to the state constitution, which can be legally done through a citizen initiative.

“The underlying substantive law is simply changed to reflect the present intentions of the people, and that new law will be applied thereafter in any subsequent case or cases,” the court said in its ruling.

The AP reports that Justice John Greaney, in a concurring opinion, warned that approving an amendment banning gay marriage would be discriminatory because it would remove the rights of same-sex couples to the legal, social and financial benefits of marriage.

“The only effect of a positive vote will be to make same-sex couples, and their families, unequal to everyone else; this is discrimination in its rawest form,” Mr Greaney wrote.

More than 8,000 gay couples have married since Massachusetts legalised same-sex marriages three years ago.

Citizen-initiated ballot questions must be certified by the attorney general and then approved by two consecutive legislative sessions. Before the marriage question could be placed on the 2008 ballot, supporters would need to win the votes of 50 lawmakers – 25 percent of the Legislature – in two consecutive sessions.

Lee Swislow, executive director of Gay Lesbian Advocates Defenders, told the Boston Globe that she was disappointed but knew it would be an uphill battle. She said the fight is not over.

“So now obviously the focus is going to turn to the Legislature, which has a chance on Wednesday during the constitutional convention to do the right thing and defeat this amendment,” said Ms Swislow, whose organization filed the lawsuit in January.

Massachusetts is the only state that allows gay marriage, although Vermont and Connecticut allow same-sex civil unions that confer the same legal rights as heterosexual married couples.

Forty-five states have specifically barred same-sex marriage through statutes or constitutional amendments. Last week, justices on New York’s highest court ruled gay marriage is illegal there under state law, and Georgia’s high court ruled its state constitutional amendment banning gay marriage was legal.

Supporters of Massachusetts’ amendment told the Globe they are confident they will have enough votes to win the first round of approval from the Legislature. They would also need to win approval in the next legislative session.

“We are comfortably in excess of 50 votes,” said Kris Mineau, president of the Massachusetts Family Institute.

“We are very, very excited, elated and pleased with the SJC ruling,” he said. “All I can say is justice is alive and well in Massachusetts.”

© 2006 GayWired.com; All Rights Reserved.