Twenty Democratic officeholders announced their support for a union-backed measure that would raise the minimum wage to $15 an hour for hospitality and transportation workers in SeaTac.

A proposed $15-an-hour minimum wage for hospitality and transportation workers in SeaTac scored endorsements Tuesday from 20 elected Democrats, including U.S. Rep. Adam Smith, King County Executive Dow Constantine and state House Speaker Frank Chopp. The endorsements were announced by Yes! For SeaTac, a union-backed political committee supporting the Nov. 5 ballot initiative.

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