WASHINGTON — Two Democratic lawmakers introduced legislation Thursday in the House and Senate that would raise the minimum wage to $12 an hour by 2020.

Sen. Patty Murray (D., Wash.) and Rep. Robert “Bobby” Scott (D., Va.) introduced the “Raise the Wage Act,” which would boost the minimum wage to $12 an hour from the current $7.25 an hour over the next five years.

The legislators said raising the minimum wage will “help more families make ends meet, expand economic opportunity and help drive an economy that grows from the middle out, not the top down.”

The bill’s prospects aren’t strong, since Republicans control the House and Senate and do not generally support an increase in the federal minimum wage, although public sentiment, such as a rallies by fast food workers pressing for wage increases, have put the issue in the spotlight.

AFL-CIO President Richard Trumka said the legislation “represents significant progress in the powerful, collective movement to raise wages. It’s inspiring to see the momentum generated by working people across the country influence some of the largest corporations and the most powerful political forces.”