"A federal judge on Monday struck down Oregon's voter-approved ban on gay marriage, saying it is unconstitutional.
U.S. District Judge Michael McShane said the ban unconstitutionally discriminates against same-sex couples and ordered the state not to enforce it. State officials earlier refused to defend the constitutional ban in court.
McShane joined judges in seven other states who have struck down gay marriage bans, though appeals are underway.
Oregon state officials have said they'd be prepared to carry out same-sex marriages almost immediately, and couples lined up outside the county clerk's office in Portland in anticipation of the McShane's decision." - Source
It's the domino effect.