Same-Sex Wedding Crush Expected Today

Del Martin, 87, center left, and Phyllis Lyon, 84, center right, are married by San Francisco Mayor Gavin Newsom , center, in a special ceremony at City Hall in San Francisco, Monday, June 16, 2008. Also pictured are the couple's witnesses, Roberta Achtenberg, left, and Donna Hitchens. Lyon and Martin became the first officially married same sex couple after California's Supreme Court declared gay marriage legal. (AP Photo/Marcio Jose Sanchez, Pool)
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San Francisco (AP) Some couples tied the knot after hours last night, but most county offices in California were closed at the exact minute gay marriage was legalized.

Today is the day that hundreds, if not thousands, of gay couples will exchange vows.

The law banning gay marriage was officially voided at 5:01 p.m. Pacific time yesterday, when most county offices were closed. A UCLA study predicts that the next three years could see more than 100,000 gay couples from around the country get married there. The
Law comes with no residency requirement.

But it's also possible that a November referendum could overturn gay marriage again.