Hoping to latch onto momentum sparked by passage of same-sex marriage measures in other states, Oregon supporters of gay marriage are beginning an effort to put a constitutional amendment on the Nov. 2014 ballot.

"There have not been public votes on advancing marriage for same-sex couples in Oregon, so this is the first step in qualifying the measure for the Nov. 2014 vote to affirm the freedom to marry for gay and lesbian couples," said Jeana Frazzini, head of Basic Rights Oregon.

In 2004, Oregonians passed a constitutional amendment defining marriage as a union between a man and woman. A vote of the people is required to change that language.

Oregon United for Marriage must collect 1,000 signatures for review by the Oregon Secretary of State's office. If they are confirmed, the ballot title process is triggered - allowing the group to begin circulating petitions to put the measure on the ballot.

Supports will join 14 events around the state to collect the initial 1,00 signature. View details on Oregon United for Marriage website.