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Bill supporters decided to put the question on the May primary ballot next year rather than the November 2012 general election ballot, ensuring the proposal would win support from enough Democrats to clear the 72 House-vote hurdle for proposed constitutional changes.

The move alleviated concerns among Democrats who support the amendment that Republicans were pushing the question to boost turnout from social conservatives for next year’s presidential election. At least one Democrat, Rep. Jim Crawford of Oxford, said moving the vote to May was crucial to winning his support. Ten Democrats and 65 Republicans voted for the amendment.