PPP Iowa caucus poll:
http://www.publicpolicypolling.com/main/2014/05/huckabee-clinton-continue-to-lead-in-iowa.htmlGOP
Huckabee 20%
Cruz 15%
Bush 12%
Paul 10%
Christie 9%
Ryan 8%
Walker 6%
Rubio 4%
Santorum 3%
Dems
Clinton 59%
Biden 12%
Warren 11%
Booker 3%
Cuomo 3%
Warner 2%
Gillibrand 1%
O'Malley 1%
Schweitzer 1%
If Clinton doesn't run....
Biden 34%
Warren 22%
Cuomo 7%
Booker 4%
Gillibrand 3%
O'Malley 2%
Schweitzer 1%
Warner 1%
If neither Biden nor Clinton run....
Warren 31%
Cuomo 14%
Booker 9%
Gillibrand 5%
O'Malley 2%
Warner 2%
Schweitzer 1%