If some AA support can flee Biden to Mr. Stop & Frisk because of "electability", then it's conceivable it could also flow to Amy Klobucop, in a way that it might not to Buttigieg, who definitely inspires a more visceral dislike. I mean, I think Amy is probably a flash in the pan, just the flavor of the day who's only getting a look due to an unrepresentative state, and once she gets into the spotlight she'll wilt like every other candidate so far .... but I really don't think Bloomberg has this on lockdown.