Don't knows lead Democratic race

DEMOCRATIC PRESIDENTIAL CANDIDATES
As judged by Democratic voters. Most recent poll to right

Don't know 56, 38%
Biden  27, 33, 26, 25, 28, 15, 30, 26, 9, 20%
Sanders  28, 16, 13, 19, 15, 21, 13, 14, 16, 13%
Harris 5. 5, 5, 9, 4, 10, 4, 9, 8, 5%..
Warren 33, 14, 6, 11, 7, 8, 5, 6, 3, 2, 4%
O'Rourke 8, 9, 7, 16, 9, 4%
Bloomberg 4, 2, 3, 3, 2%
Booker 2, 4. 8, 4, 5, 3, 2, 5, 1%
Kerry 5, 2, 4, 1%
Klobuchar 3, 3, 1%
Brown 3, 1, 1%
Holder, 4,1,1, 1%
Gilibrand 1%
Castro 1%
Hickenlooper 1%
Gabbard 1%