LOS ANGELES (AP) - California voters have approved a constitutional amendment outlawing same-sex marriage, overturning the state Supreme Court decision that gave gay couples the right to wed just months ago.

The passage of Proposition 8 represents a crushing political defeat for gay rights activists, who had hoped public opinion on the contentious issue had shifted enough to help them defeat the measure.

It also represents a personal loss for the thousands of couples from California and others states who got married in the brief window when they could. Legal experts have said it will have to be resolved in court whether their unions still are valid.