Opponents of Washington state's gay marriage law say they have collected enough signatures to put it on the November ballot.

Preserve Marriage Washington, the coalition of groups attempting to block the law from taking effect on June 7, said on its website that it has collected over 153,000 signatures, more than the 120,577 valid signatures needed by June 6. Officials recommend that campaigns submit 150,000 signatures to head off invalid or duplicate entries.

“We feel that it's going to be adequate to get it on the ballot,” Joseph Backholm, executive director of the Family Policy Institute of Washington, a member of Preserve Marriage Washington, told The Seattle Times. “We're quite confident of that.”

Backholm added that the total number of signatures could hit 200,000.

Supporters of the law said they always expected opponents to put it up to a popular vote.

“We always expected them to reach the number,” said Zach Silk, a spokesman for Washington United for Marriage, the coalition of groups working to preserve the law. “We've been preparing our campaign to talk to voters. We believe at the end of the day they'll side with us to uphold the law.”

Voters in 2009 rejected an effort to repeal a domestic partnership law which gave gay couples all the protections of marriage.