In this photo taken, Aug. 1, 2013, demonstrators protesting what they say are low wages and improper treatment for fast-food workers march in downtown Seattle. In an interview with The Associated Press, Mayor Mike McGinn said he thought $15 was a “fair starting point” for the minimum wage discussion. McGinn challenger Ed Murray recently announced that he would push for a $15 minimum wage but planned to proceed with a phased-in approach. Washington already has the nation's highest state minimum wage at $9.19 an hour. (AP Photo/Elaine Thompson, File)

Photo by: Elaine Thompson

In this photo taken, Aug. 1, 2013, demonstrators protesting what they say are low wages and improper treatment for fast-food workers march in downtown Seattle. In an interview with The Associated Press, Mayor Mike McGinn said he thought $15 was a “fair starting point” for the minimum wage discussion. McGinn challenger Ed Murray recently announced that he would push for a $15 minimum wage but planned to proceed with a phased-in approach. Washington already has the nation's highest state minimum wage at $9.19 an hour. (AP Photo/Elaine Thompson, File)