BOSTON (AP) Mitt Romney is promising to reduce taxes on middle-income Americans.

But how does he define "middle-income"? The Republican presidential nominee defined it as income of $200,000 to $250,000 a year.

Romney commented during an interview broadcast Friday on ABC's "Good Morning America."

The Census Bureau reported this week that the median household income the midpoint for the nation is just over $50,000.

The definition of "middle income" or the "middle class" is politically charged. Both presidential candidates are fighting to win over working-class voters.

President Barack Obama has defined "middle class" as income up to $250,000 a year.

Obama wants to extend Bush-era tax cuts for those making less than $250,000. Romney wants to extend the tax cuts for everyone.