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

— -- 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.