BY RACHEL LA CORTE, ASSOCIATED PRESS
With the gift, Washington United for Marriage has raised more than $5 million for its referendum campaign.
"It's a game changer for us," said campaign manager Zach Silk in Seattle. "It puts us in unique position to win."
But, his group is still the underdog, he said. In 32 previous elections nationally, same-sex advocates have lost. Silk said he believes the Washington election may be the turning point, thanks in part to the Bezos' donation.
"We're at a tipping point, and they really understand this is an historic moment, and they want to be on the right side of history and want to make history," he said.
Amazon.com Inc. publicly supported the law earlier this year, along with other prominent Pacific Northwest businesses, including Microsoft Corp., Starbucks Corp. and Nike Inc.
Last month, Microsoft Corp. CEO Steve Ballmer and co-founder Bill Gates each donated $100,000 to support the law.