Joe Biden vs Cory Booker:Who wins the majority of black voters in the primaries?

[Mr. Morden]

I am not counting on Booker to necessarily win the black vote outright.  I just think he'll do better with the black vote than he will with the white vote, whether his main opposition is Biden or anybody else.  Even in the 2008 case, back in mid-2007-ish, when Obama was losing the black vote to Clinton in the polls, he was still doing better among blacks than he was among whites (at least in most polls).  Basically every black Democratic presidential candidate does better with blacks than whites.