Why Hasn't Joe Biden Signed the Indivisible Pledge to Support the Democratic Winner? Ezra Levin

Every Democratic primary candidate with more than 1 per cent in the polls has signed the Indivisible Pledge to support the Democratic winner, with one exception: Joe Biden.  Why not?  Ezra Levin comments—he’s co-founder of Indivisible, the nationwide network of grassroots progressive groups.