Nearing an End-Game on Same-Sex Marriage?

It's been almost a year since the Supreme Court tossed the issue of same-sex marriage back to state legislatures and lower courts. Now lawsuits are pending in all but five states. This month, the 10th Circuit Court of Appeals heard cases regarding same-sex marriage in Utah and Oklahoma, both of which struck down bans. Next month a circuit court in Virginia will consider the constitutionality of that state's ban. Michigan and Texas also have appeals in the works. Polls show that support for gay marriage is at an all time-high. The fight over Prop 8, California's ballot initiative to ban same-sex marriage, has played a large role in accelerating this shift in attitudes. Why are people changing their minds? How will appellate judges rule on the welter of challenges to gay marriage bans? Might the Supreme Court make a final call next year?