He has a black wife and an interracial family. That could play well in the Dem Party.
I have a dog, Goober, who has a black spot on her ... could play well as a Dem candidate for Mayor of NYC except she has integrity and will decline even if drafted!
It’s even better than that: his wife is an ex-lesbian. Or identifies as hetero. For now. All in all, the perfect (D) family unit.
His wife was a crazy radical feminist lesbian before marrying De Blasio, that won't play well with anyone else.