W. James Antle, III of American Spectator comes to Mitt Romney's defense on his record of defending marriage:

Even during his most socially liberal campaign, the 1994 run against Ted Kennedy, Romney never openly supported same-sex marriage (at the time, this would not have even been a mainstream position among Democrats). He opposed both same-sex marriage and civil unions while running for governor in 2002, by that time a fairly conservative position by Massachusetts standards. After the Goodridge decision, Romney unsuccessfully requested a stay. He twice cobbled together the votes necessary to advance measures that could have reached the statewide ballot under the commonwealth's byzantine amendment process and possibly overturned the pro-same-sex marriage ruling. He also endorsed a federal marriage amendment.

... Romney probably could have done more to call the legislature into account for dubiously recessing the constitutional convention that was the last, best shot to overturn Goodridge. I think he can also be fairly criticized for abandoning the state in 2006 to run for president, knowing that this would make Goodridge's reversal even less likley. But Romney probably could have spent his entire governorship on the issue and had no more to show for it than he does now.