Rep. Jay Inslee of Washington announced Saturday that he would resign his seat in Congress so that he could focus on his campaign for governor.
Inslee, a Democrat, has represented Washington's 1st District in Congress since 1999. He also served a single term representing the 4th District from 1993 to 1995.
His resignation will take effect March 20.
"I am not one for half-measures or halfhearted efforts," Inslee said in a statement from his campaign. "I am going to leave everything on the field."
Inslee is the sole Democrat in the race to succeed two-term Democratic Gov. Chris Gregoire, who chose not to seek a third term this year. Polls show Inslee trailing two-term state Atty. Gen. Rob McKenna, a Republican.