ANNAPOLIS, Md. (AP/ABC7) - A scheduled debate over Maryland's same-sex marriage bill in the House of Delegates has been postponed, the State Comptroller's Office said Wednesday morning.

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No reason was given for the postponement, but the office says that debate will not happen until at least Thursday.

After passing through a panel of 45 lawmakers, legislation to allow same-sex unions was expected to be introduced to the full chamber on Wednesday.

The bill is moving to the House floor with the support of at least one Republican, Delegate Robert Costa. Costa voted to move the bill out of committee Tuesday, a day after Gov. Martin O'Malley said the support of GOP lawmakers could be critical to passing the legislation.

Should the House and state Senate sign off on the bill, Maryland could become the eighth state to legalize gay marriage.

Opponents of the bill say they worry such a move will force educators to teach about gay marriage in public schools.