The Maryland House of Delegates was expected to push the bill to a final vote Friday, but instead sent it back to committee.
House members advanced the bill Wednesday on a voice vote, and rejected four attempts to amend the measure, which would grant full marriage rights to same-sex couples in Maryland.
Del. Aisha Braveboy, a Prince George's County Democrat who does not support gay marriage, offered an amendment which would have put the issue to a vote in 2012.
"I was surprised about the number of votes that I did get for it, because that meant that both Democrats and Republicans supported this amendment, which I think is a consensus amendment," she says.
Del. Heather Mizeur supports the bill.
"A lot of the amendments we saw coming forward were dealing with issues that were just red herrings. Issues that are already addressed in other parts of the code," she says.
A final vote on the measure is expected on Friday.