Poll Update

2016 Iowa Democratic Presidential Caucus - Sanders 43%, Clinton 33% (CBS/YouGov 9/3-9/10/15)

Population 1,670 Registered Voters
Margin of Error ±4.4 percentage points
Polling Method Internet
Source CBS/YouGov [PDF]
This poll asked respondents 2 questions tracked by HuffPost Pollster. Read our FAQ.

2016 Iowa Democratic Presidential Caucus

Asked of 646 Likely Voters - Democrat
Clinton 33%
O'Malley 5%
Sanders 43%
Undecided 7%
Biden 10%
Webb 1%
Chafee 1%

2016 Iowa Republican Presidential Caucus

Asked of 705 Likely Voters - Republican
Bush 3%
Carson 25%
Christie 1%
Cruz 10%
Fiorina 4%
Gilmore 1%
Huckabee 4%
Kasich 2%
Paul 2%
Rubio 6%
Santorum 3%
Trump 29%
Undecided 4%
Jindal 2%
Walker 5%
Graham 0%
Perry 0%
Pataki 0%