ANNAPOLIS, Md. (WJZ)–The fight over same-sex marriage remains one of the most controversial issues on the ballot here in Maryland. Both sides are working overtime to get out the vote.

Meghan McCorkell has more on the final push.

Both supporters and opponents of same-sex marriage say the vote will be a close one. In these final hours, they are doing everything they can to get voters to the polls.

Some high-profile help for supporters of same-sex marriage. Governor Martin O’Malley is trying to reel in voters this election eve.

“Question 6 is really about basic fairness, treating every child’s home equally under the law,” O’Malley said. “I think the people of our state are going to choose tomorrow to move forward.”

A frenzy of activity at the Canton headquarters of Marylanders for Marriage Equality as volunteers get ready to flood the polls.

“This is just about treating everybody fairly and equally under the law and that’s what we’re fighting for. That’s what we’re trying to do,” said Josh Levin, Maryland for Marriage Equality.

Opponents of same-sex marriage are also busy and some attended an overnight prayer service in Baltimore.

Inside Rock City Church, Bishop Bart Pierce urged church members to vote against Question 6.

“Look in the Scriptures and base your decisions based on the word of God,” Pierce said.

Opponents admit it is a tight race.

“The folks that are strongly with us on this are definitely the ones that have got to get out to vote. If they do that, we win,” said Derek McCoy, Maryland Marriage Alliance.

Now one of the most controversial decisions in the state is in the hands of the voters.

If passed, Maryland would be the first state to legalize same-sex marriage by voter referendum.

Maryland is one of four states with same-sex marriage on the ballot Tuesday. The other three are Maine, Washington and Minnesota.