Voters in Maryland are divided on a recently approved law legalizing gay marriage in the state.

Governor Martin O'Malley earlier this month signed a gay marriage bill approved by lawmakers into law, making Maryland the eighth state to legalize gay marriage.

Opponent have vowed to put the law up for a vote in November. Nearly 56,000 valid signatures, one-third of which would need to be submitted by May 31, with the remainder by June 30, are needed to put the measure on the ballot. The campaign is being organized by Maryland Marriage Alliance, which is supported by the National Organization for Marriage (NOM).

According to a new poll of 601 registered voters conducted by OpinionWorks, a narrow majority (43%) of respondents said they would vote to make gay marriage illegal, while 40% said they support the law. Eleven percent refused to answer. The poll has a margin of error of plus or minus 4 percentage points.

An earlier poll commissioned by gay rights advocate Marylanders for Marriage Equality and conducted by Public Policy Polling found a narrow majority (52%) in favor and 44 percent against the law.