Fifty-six Republican members of the Iowa House have joined an effort to end gay marriage in the state.

The effort to put a question on the 2013 ballot that would define marriage in the Iowa Constitution as a heterosexual union – and thereby reverse the 2009 Iowa Supreme Court ruling that brought gay marriage to the Midwest – is expected to win committee approval as soon as next week.

“I don't think we'll dawdle,” House Speaker Kraig Paulsen, a Republican, told ABC affiliate KCRG in reference to when the measure is likely reach the floor for a vote.

Fifty-one votes are needed for passage in the chamber and supporters claim all 60 Republicans will likely vote for the measure, which has little – if any – support among Democrats.

A similar resolution, however, faces a much steeper incline in the Democrat-controlled Senate, where Majority Leader Michael Gronstal has vowed to block the measure from reaching the floor.

Governor Terry Branstad has previously called Gronstal a “dictator” for his opposition.

“Just because you're a leader in the Legislature, doesn't mean you're a dictator,” Branstad said, a clear reference to Gronstal.

Republicans increased their numbers in the Legislature and took over the Governor's Mansion on November 2. Voters also ousted three out of the seven Iowa Supreme Court justices who unanimously legalized gay marriage.