The U.S. Supreme Court today rejected requests to review lower court decisions that overturned bans on same-sex marriage in five states: Indiana, Oklahoma, Utah, Virginia and Wisconsin. By denying these requests, the court effectively legalized gay marriage in these states. The lower court rulings had been on hold until the Supreme Court weighed in, but soon after the high court’s decision was made known, a number of states, including Virginia and Wisconsin, announced that gay and lesbian couples would be able to marry almost immediately.

While today’s decision settles the issue in some states, it has not ended the battle over same-sex marriage. Here is an explainer of today’s news and its possible impact.

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