REUTERS - A bill to legalize gay marriage in Washington state won final legislative approval on Wednesday in a vote that moved the state one step closer to becoming the seventh to recognize same-sex nuptials.

Washington's Democratic Governor Christine Gregoire said she looked forward to signing the measure and "putting into law an end to an era of discrimination" even as opponents, led by religious conservatives, vowed to seek its repeal at the polls in November.

The approval in the state House of Representatives came a day after gay marriage advocates won a key legal victory in California when a federal appeals court declared a voter-approved gay marriage ban in that state unconstitutional.