Arizona, Colorado, Maine and Washington Appear Set to Increase Minimum Wages

A look at the measures in Arizona, Colorado, Maine and Washington.

— -- Voters in Arizona, Colorado, Maine and Washington approved ballot measures to increase their state's minimum wage, ABC News has projected based on vote analysis.

Arizona will incrementally increase its state minimum wage from $8.05 an hour to $12 an hour by 2020, according to Proposition 206.

Colorado will incrementally increase its state minimum wage from $8.31 an hour to $12 an hour by 2020, according to Amendment 70.

Maine will incrementally increase its state minimum wage from $7.50 an hour to $12 an hour by 2020, according to Question 4,

Washington will incrementally increase its state minimum wage from $9.47 an hour to $13.50 by 2020, according to Initiative 1433.

The national minimum wage is currently $7.25 an hour. It has not changed since 2009, when it rose from $6.55 to $7.25 as the last of three wage increases mandated by The Fair Minimum Wage Act of 2007.

Republican presidential nominee Donald Trump and Democratic presidential nominee Hillary Clinton have both supported a federal minimum wage hike.

Trump has advocated to increase the federal minimum wage to $10 per hour, while Clinton has suppoted a $12 per hour federal minimum wage and a $15 per hour minimum rate in larger cities.