A proposed constitutional ban on same-sex marriage was defeated today by a joint session of the Legislature by a vote of 45 to 151, eliminating any chance of getting it on the ballot in November 2008. At least 50 votes were needed to advance the measure.

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Because fewer than 50 of the state’s 200 lawmakers supported the amendment, it will not appear on the 2008 ballot, giving gay marriage advocates a major victory in their battle with social conservatives to keep same-sex marriage legal in Massachusetts.

Full Story: Boston Globe.