Donald Trump's tax platform has won the support of yet another liberal Democrat.

New York City Mayor Bill de Blasio (D), arguably one of the most liberal elected officials in America, told Seth Meyers in an interview Thursday that he likes the GOP front-runner's willingness to raise taxes on the very wealthy.

That "millionaire and billionaire hedge-fund managers should have to pay the same tax rate as the rest of us," de Blasio said. "And I was pleasantly surprised."

De Blasio said he's pushing to change the carried interest loophole, a 50-year-plus law that allows investors like hedge-fund managers and venture capitalists to pay a lower tax rate than the average American -- the idea being that investment carries inherent risk and should be taxed lower as a result.

De Blasio went on to say he thinks Trump's comments prove that income inequality is becoming a hot topic even among those on the right. (The Fix has documented that as well).

[Raising taxes on the wealthy? Calling out income inequality? Meet the new GOP.]

As my colleague Dave Weigel has pointed out, de Blasio is the latest progressive leader to praise Trump's plan. Sen. Elizabeth Warren (D-Mass.) said this week: "Don't call us liberal. It is a pretty right position."

[Why some liberals love Donald Trump]

Maybe Trump has bipartisan appeal after all?