Breaking news from Iowa. A huge win for marriage equality:

The Iowa Supreme Court this morning unanimously upheld gays’ right to marry.

“The Iowa statute limiting civil marriage to a union between a man and a woman violates the equal protection clause of the Iowa Constitution,” the justices said in a summary of their decision.

The court affirmed a Polk County District Court decision that would allow six gay couples to marry.

The ruling is viewed as a victory for the gay rights movement in Iowa and elsewhere, and a setback for social conservatives who wanted to protect traditional families.

The decision makes Iowa the first Midwestern state, and the fourth nationwide, to allow same-sex marriages. Lawyers for Lambda Legal, a gay rights group that financed the court battle and represented the couples, had hoped to use a court victory to demonstrate acceptance of same-sex marriage in heartland America.