Gay marriage activists in Oregon will launch an effort in October to put the state's constitutional gay marriage ban up for a vote.

According to the Statesman Journal, the gay rights group Basic Rights Oregon will begin collecting signatures in the fall for a possible 2012 ballot campaign.

Voters in the state approved the ban in 2004.

Three years later, the Legislature approved domestic partnerships for gay and lesbian couples.

The decision to move forward was announce at a Garden Party fundraiser in South Salem, at which Oregon State Secretary Kate Brown spoke.

“I fully support the work that Basic Rights Oregon does,” Brown said. “They do an amazing job educating and engaging Oregonians across the state.”

“I think it's really important that Oregonians have an understanding of how discrimination impacts the lesbian, gay, transgender and bisexual community,” she added.

Polling shows more voters in the state support gay marriage than oppose it, but not a majority. A Public Policy Polling survey in June found 48 percent of voters in favor and 42 percent against the legalization of such marriages.

Campaigners in Maine also hope to put a similar question on the ballot next year.