Washington Senate approves same-sex marriage bill; full measure expected to pass House next week.
The Washington state Senate has voted to pass a bill to legalize same-sex marriage.
The Senate passed the bill on vote of 28-21.
Four Republicans crossed party lines and voted with majority Democrats for the measure.
Three Democrats voted against it.
The measure now moves to the House, which also has enough votes to pass the bill.
Governor Chris Gregoire has said she will sign the bill if it gets to her desk.