For weeks, organizers from both sides of Question One have been saying the outcome will depend on who does a better job galvanizing their supporters and getting those people to the polls. And both campaigns are spending their final hours doing just that.

Dennis Mason of Lewiston is one of the volunteers urging previously identified supporters of Question One to vote "yes." A "yes" vote is a vote to repeal Maine's same-sex marriage law, which was passed by the Legislature and signed by the governor, but which has not yet taken effect.

Like many other people, Mason himself voted early by absentee ballot. He says the issue of same-sex marriage is the most important one to him this election season. "There are a lot of things that -- unforeseen things for many people -- that will happen if people don't vote Yes on One."

Mason says he fears legalizing same-sex marriage is just the first step in a broader agenda by gays and lesbians that also includes changing school curricula and other policies. Meanwhile, at the No on One camp in Portland, volunteers were also going door to door.

"Today specifically from this shift we had 5,080 knocks. Give yourselves a round of applause," says Jen Higgins of Cumberland, as she briefs same-sex marriage supporters at the Portland Club. The latest poll shows No On One/Protect Maine Equality trailing same sex marriage oponents by just a few percentage points. "Out of those 5,080 knocks we had 656 'no' voters that we talked to that are going to vote, and that, compared to 34 'yes' voters," she tells the cheering crowd.

"Certainly, I think the higher turnout goes for Question One, the more it helps the No side," says Mark Brewer, a political science professor at the University of Maine. He says the reason for his position is that he thinks Yes on One had a more passionate base of supporters going into today's vote. The more passionate people are the more likely they are to vote.

"So in a low turnout election the more passionate side generally tends to win," Brewer says. "Now the edge that you get from having a more passionate group of supporters tends to dissipate as turnout goes up, so I think the higher you see turnout go, at least for Question One, I think it advantages the No side." Brewer says he's not clear what high turnout means for TABOR, the excise tax question, school consolidation or medical marijuana.

Carol Chartier of Lewiston was among those identified as a Stand for Marriage Maine supporter who answered the door for a campaign volunteer. She says she's voting Yes on One, supporting an expansion of Maine's medical marijuana law for a daughter-in-law who has cancer, and voting for TABOR, the taxpayer bill of rights.

"They're spending too much money. They're leaving the elderly behind," she says. "We have hardly anything to live on. We get social security. My husband passed away - that's all I got."

Some voters said they were confused by some of the questions, including a constitutional amendment to give election clerks more time to process petitions. Others, like this man who only identified himself as John, said he did not feel strongly about any one particular issue on the ballot. "All the way across the board, I vote everytime that I have an opportunity to, and I believe everybody should if they have an opportunity."

Secretary of State Matt Dunlap is now expecting at least 50 percent of eligible voters to cast ballots in this election. Even before today, more than 100,000 people had voted by absentee ballots.