Iowa’s 2020 Democratic Presidential Caucuses

We’re tracking polls and endorsements, with more to come.

Iowa’s caucuses are scheduled for Feb. 3, 2020.
41 delegates will be awarded proportionally based on the results statewide and in each congressional district.
In 2016, Hillary Clinton got 49.8% of the vote in Iowa, and Bernie Sanders got 49.6%.

Polls See all »

Key

A = ADULTS

RV = REGISTERED VOTERS

V = VOTERS

LV = LIKELY VOTERS

More candidates »
DatesPollsterSample
Biden
Warren
Sanders
Buttigieg
Harris
Klobuchar
Booker
Steyer
Yang
Gabbard
Castro
Delaney
Bullock
Bennet
Williamson
Bloomberg
Sestak
O'Rourke
Gillibrand
Inslee
Ryan
Hickenlooper
Swalwell
de Blasio
Gravel
Brown
Moulton
Abrams
Kennedy
H. Clinton
Cuomo
Kerry
Messam
McAuliffe
Holder
Schultz
Garcetti
Nov 8-13, 2019
500 LV
Nov 8-13, 2019
500LV
15%
16%
15%
25%
3%
6%
3%
3%
3%
3%
0%
0%
0%
1%
0%
2%
0%

Buttigieg

25%

Warren

16%

Biden

15%

Sanders

15%

Klobuchar

6%

Booker

3%

Gabbard

3%

Harris

3%

Steyer

3%

Yang

3%

Bloomberg

2%

Bennet

1%

Bullock

0%

Castro

0%

Delaney

0%

Sestak

0%

Williamson

0%
Nov 6-13, 2019
718 LV
Nov 6-13, 2019
718LV
22%
18%
22%
21%
5%
5%
1%
2%
1%
0%
1%
0%
1%
0%
0%
0%
0%

Sanders

22%

Biden

22%

Buttigieg

21%

Warren

18%

Klobuchar

5%

Harris

5%

Steyer

2%

Booker

1%

Yang

1%

Bullock

1%

Castro

1%

Messam

0%

Delaney

0%

Bennet

0%

Gabbard

0%

Williamson

0%

Sestak

0%
Nov 7-11, 2019
451 LV
Nov 7-11, 2019
451LV
19%
18%
13%
22%
3%
5%
2%
3%
3%
2%
1%
0%
1%
0%
0%
0%
0%

Buttigieg

22%

Biden

19%

Warren

18%

Sanders

13%

Klobuchar

5%

Harris

3%

Steyer

3%

Yang

3%

Booker

2%

Gabbard

2%

Bullock

1%

Castro

1%

Bennet

0%

Bloomberg

0%

Delaney

0%

Williamson

0%

Sestak

0%
Oct 28-Nov 10, 2019
465 LV
Oct 28-Nov 10, 2019
465LV
15%
23%
18%
16%
2%
1%
0%
3%
3%
3%
1%
0%
0%
0%
0%
0%

Warren

23%

Sanders

18%

Buttigieg

16%

Biden

15%

Yang

3%

Gabbard

3%

Steyer

3%

Harris

2%

Klobuchar

1%

Castro

1%

Booker

0%

O'Rourke

0%

Delaney

0%

Bennet

0%

Bullock

0%

Ryan

0%
Nov 5-6, 2019
715 LV
Nov 5-6, 2019
715LV
13%
21%
14%
20%
3%
9%
1%
6%
3%

Warren

21%

Buttigieg

20%

Sanders

14%

Biden

13%

Klobuchar

9%

Steyer

6%

Harris

3%

Yang

3%

Booker

1%
Oct 30-Nov 5, 2019
698 LV
Oct 30-Nov 5, 2019
698LV
15%
20%
17%
19%
4%
5%
1%
3%
3%
3%
1%
0%
1%
1%
0%
0%
0%

Warren

20%

Buttigieg

19%

Sanders

17%

Biden

15%

Klobuchar

5%

Harris

4%

Gabbard

3%

Yang

3%

Steyer

3%

Booker

1%

Castro

1%

Bennet

1%

Bullock

1%

Delaney

0%

Williamson

0%

Messam

0%

Sestak

0%
Oct 25-30, 2019
439 LV
Oct 25-30, 2019
439LV
17%
22%
19%
18%
3%
4%
2%
2%
3%
2%
0%
1%
0%
0%
0%
0%
1%
0%

Warren

22%

Sanders

19%

Buttigieg

18%

Biden

17%

Klobuchar

4%

Harris

3%

Yang

3%

Booker

2%

Gabbard

2%

Steyer

2%

O'Rourke

1%

Delaney

1%

Castro

0%

Bennet

0%

Bullock

0%

Messam

0%

Sestak

0%

Williamson

0%
Oct 18-22, 2019
598 LV
Oct 18-22, 2019
598LV
12%
28%
18%
20%
3%
4%
1%
3%
2%
2%
0%
0%
0%
1%
0%
1%
0%

Warren

28%

Buttigieg

20%

Sanders

18%

Biden

12%

Klobuchar

4%

Harris

3%

Steyer

3%

Gabbard

2%

Yang

2%

Booker

1%

O'Rourke

1%

Bennet

1%

Delaney

0%

Castro

0%

Williamson

0%

Bullock

0%

Ryan

0%
Oct 16-18, 2019
500 LV
Oct 16-18, 2019
500LV
18%
17%
9%
13%
3%
3%
1%
3%
1%
3%
0%
0%
0%
0%
0%
0%
1%
0%
0%

Biden

18%

Warren

17%

Buttigieg

13%

Sanders

9%

Steyer

3%

Gabbard

3%

Harris

3%

Klobuchar

3%

Yang

1%

Booker

1%

O'Rourke

1%

Delaney

0%

Ryan

0%

Williamson

0%

Bennet

0%

Bullock

0%

Castro

0%

Messam

0%

Sestak

0%
Oct 13-16, 2019
317 LV
Oct 13-16, 2019
317LV
23%
23%
13%
16%
2%
1%
3%
2%
5%
2%
0%
0%
4%
1%
1%
0%
0%
0%
0%

Biden

23%

Warren

23%

Buttigieg

16%

Sanders

13%

Yang

5%

Bullock

4%

Booker

3%

Steyer

2%

Harris

2%

Gabbard

2%

Klobuchar

1%

Williamson

1%

Bennet

1%

Castro

0%

O'Rourke

0%

Delaney

0%

Sestak

0%

Ryan

0%

Messam

0%
Oct 3-11, 2019
597 LV
Oct 3-11, 2019
597LV
22%
22%
21%
14%
5%
2%
2%
3%
0%
1%
0%
0%
0%
1%
1%
0%
2%
1%
0%

Biden

22%

Warren

22%

Sanders

21%

Buttigieg

14%

Harris

5%

Steyer

3%

Klobuchar

2%

Booker

2%

O'Rourke

2%

Bennet

1%

Gabbard

1%

Williamson

1%

Ryan

1%

Castro

0%

Yang

0%

Delaney

0%

Bullock

0%

Messam

0%

Sestak

0%
Oct 8-10, 2019
548 LV
Oct 8-10, 2019
548LV
22%
25%
5%
17%
3%
2%
1%
1%

Warren

25%

Biden

22%

Buttigieg

17%

Sanders

5%

Harris

3%

Booker

2%

O'Rourke

1%

Yang

1%
Sep 14-18, 2019
602 LV
Sep 14-18, 2019
602LV
20%
22%
11%
9%
6%
3%
3%
2%
2%
2%
1%
1%
1%
0%
0%
0%
2%
0%
0%

Warren

22%

Biden

20%

Sanders

11%

Buttigieg

9%

Harris

6%

Booker

3%

Klobuchar

3%

Gabbard

2%

O'Rourke

2%

Steyer

2%

Yang

2%

Bullock

1%

Castro

1%

Delaney

1%

Bennet

0%

Williamson

0%

de Blasio

0%

Ryan

0%

Sestak

0%
Sep 13-17, 2019
572 LV
Sep 13-17, 2019
572LV
16%
24%
16%
13%
5%
3%
2%
2%
3%
4%
0%
0%
0%
0%
1%
2%
1%
0%

Warren

24%

Biden

16%

Sanders

16%

Buttigieg

13%

Harris

5%

Gabbard

4%

Klobuchar

3%

Yang

3%

Steyer

2%

Booker

2%

O'Rourke

2%

Williamson

1%

Ryan

1%

Bullock

0%

Castro

0%

Bennet

0%

Delaney

0%

de Blasio

0%
Sep 14-16, 2019
500 LV
Sep 14-16, 2019
500LV
25%
23%
9%
12%
5%
8%
2%
3%
2%
1%
1%
1%
1%
0%
0%
0%
1%
0%
0%
0%

Biden

25%

Warren

23%

Buttigieg

12%

Sanders

9%

Klobuchar

8%

Harris

5%

Steyer

3%

Booker

2%

Yang

2%

Bullock

1%

Castro

1%

Delaney

1%

Gabbard

1%

O'Rourke

1%

Bennet

0%

de Blasio

0%

Messam

0%

Ryan

0%

Sestak

0%

Williamson

0%
Aug 28-Sep 4, 2019
682 LV
Aug 28-Sep 4, 2019
682LV
29%
17%
26%
7%
6%
2%
2%
2%
1%
1%
1%
1%
0%
0%
0%
0%
2%
0%
1%
0%

Biden

29%

Sanders

26%

Warren

17%

Buttigieg

7%

Harris

6%

Klobuchar

2%

Steyer

2%

Booker

2%

O'Rourke

2%

Yang

1%

de Blasio

1%

Gabbard

1%

Delaney

1%

Castro

1%

Bullock

0%

Sestak

0%

Williamson

0%

Bennet

0%

Ryan

0%

Messam

0%
Aug 9-11, 2019
621 LV
Aug 9-11, 2019
621LV
17%
28%
17%
13%
8%
2%
3%
2%
1%
2%
1%
0%
2%
1%
0%
3%
0%
0%
0%

Warren

28%

Sanders

17%

Biden

17%

Buttigieg

13%

Harris

8%

Booker

3%

O'Rourke

3%

Gabbard

2%

Klobuchar

2%

Steyer

2%

Bullock

2%

Castro

1%

Yang

1%

Bennet

1%

Delaney

0%

Hickenlooper

0%

Williamson

0%

Messam

0%

Gillibrand

0%
Aug 1-4, 2019
401 LV
Aug 1-4, 2019
401LV
28%
19%
9%
8%
11%
3%
1%
3%
2%
1%
0%
1%
1%
0%
0%
0%
0%
2%
0%
0%
1%
0%
0%
0%

Biden

28%

Warren

19%

Harris

11%

Sanders

9%

Buttigieg

8%

Klobuchar

3%

Steyer

3%

Gillibrand

2%

Yang

2%

Booker

1%

Bullock

1%

Delaney

1%

Gabbard

1%

Hickenlooper

1%

Bennet

0%

Castro

0%

Inslee

0%

O'Rourke

0%

Williamson

0%

de Blasio

0%

Messam

0%

Moulton

0%

Ryan

0%

Sestak

0%
Jul 23-25, 2019
630 LV
Jul 23-25, 2019
630LV
23%
23%
11%
7%
12%
2%
0%
2%

Warren

23%

Biden

23%

Harris

12%

Sanders

11%

Buttigieg

7%

Booker

2%

O'Rourke

2%

Yang

0%
Jul 9-18, 2019
576 LV
Jul 9-18, 2019
576LV
24%
17%
19%
7%
16%
4%
3%
2%
0%
0%
2%
1%
0%
0%
0%
1%
1%
1%
0%
0%
1%
0%
0%
0%
0%

Biden

24%

Sanders

19%

Warren

17%

Harris

16%

Buttigieg

7%

Klobuchar

4%

Booker

3%

Castro

2%

Steyer

2%

O'Rourke

1%

Delaney

1%

Sestak

1%

Gillibrand

1%

Hickenlooper

1%

Gabbard

0%

Gravel

0%

Williamson

0%

Bennet

0%

Ryan

0%

Yang

0%

Bullock

0%

Inslee

0%

de Blasio

0%

Moulton

0%

Messam

0%
Jun 29-Jul 4, 2019
420 LV
Jun 29-Jul 4, 2019
420LV
16%
18%
16%
25%
16%
1%
1%
1%
1%
1%
1%
0%
0%
0%
2%
1%
1%
0%
0%
1%
0%
0%

Buttigieg

25%

Warren

18%

Sanders

16%

Biden

16%

Harris

16%

O'Rourke

2%

Booker

1%

Gabbard

1%

Yang

1%

Klobuchar

1%

Castro

1%

Delaney

1%

Gillibrand

1%

Inslee

1%

Swalwell

1%

Hickenlooper

0%

Williamson

0%

Bullock

0%

Bennet

0%

Gravel

0%

Moulton

0%

Ryan

0%
Jun 29-Jul 1, 2019
600 LV
Jun 29-Jul 1, 2019
600LV
17%
20%
12%
10%
18%
4%
2%
1%
1%
1%
1%
1%
1%
1%
1%
1%
0%
0%
0%
0%
1%
0%
0%

Warren

20%

Harris

18%

Biden

17%

Sanders

12%

Buttigieg

10%

Klobuchar

4%

Booker

2%

O'Rourke

1%

Delaney

1%

Gillibrand

1%

Bennet

1%

Bullock

1%

Castro

1%

de Blasio

1%

Gabbard

1%

Yang

1%

Williamson

1%

Hickenlooper

0%

Inslee

0%

Ryan

0%

Swalwell

0%

Messam

0%

Moulton

0%
Jun 28-Jul 1, 2019
500 LV
Jun 28-Jul 1, 2019
500LV
24%
13%
9%
6%
16%
2%
2%
1%
1%
1%
1%
0%
1%
0%
0%
1%
0%
0%
0%
0%
0%
0%
0%
0%
0%

Biden

24%

Harris

16%

Warren

13%

Sanders

9%

Buttigieg

6%

Klobuchar

2%

Booker

2%

Gabbard

1%

Bennet

1%

Castro

1%

Delaney

1%

O'Rourke

1%

Yang

1%

Gillibrand

0%

Inslee

0%

Hickenlooper

0%

Williamson

0%

Bullock

0%

de Blasio

0%

Gravel

0%

Messam

0%

Moulton

0%

Ryan

0%

Sestak

0%

Swalwell

0%
Jun 17-20, 2019
308 LV
Jun 17-20, 2019
308LV
27%
20%
18%
17%
4%
2%
5%
1%
1%
1%
2%
0%
0%
1%
0%
0%
0%
0%
0%
0%
1%
1%
0%

Biden

27%

Warren

20%

Sanders

18%

Buttigieg

17%

Booker

5%

Harris

4%

Klobuchar

2%

Delaney

2%

O'Rourke

1%

Yang

1%

Gravel

1%

Gabbard

1%

Castro

1%

Moulton

1%

de Blasio

0%

Gillibrand

0%

Inslee

0%

Bullock

0%

Ryan

0%

Williamson

0%

Hickenlooper

0%

Messam

0%

Swalwell

0%
May 31-Jun 12, 2019
441 LV
May 31-Jun 12, 2019
441LV
30%
12%
22%
11%
5%
4%
3%
0%
1%
0%
2%
1%
0%
0%
4%
1%
1%
1%
0%
0%
0%
0%
0%
0%

Biden

30%

Sanders

22%

Warren

12%

Buttigieg

11%

Harris

5%

Klobuchar

4%

O'Rourke

4%

Booker

3%

Delaney

2%

Gillibrand

1%

Ryan

1%

Bullock

1%

Gabbard

1%

Inslee

1%

Gravel

0%

Castro

0%

Hickenlooper

0%

Swalwell

0%

Bennet

0%

Yang

0%

Williamson

0%

de Blasio

0%

Moulton

0%

Messam

0%
Jun 2-5, 2019
600 LV
Jun 2-5, 2019
600LV
24%
15%
16%
14%
7%
2%
1%
1%
1%
1%
1%
0%
1%
0%
2%
0%
1%
0%
0%
0%
0%
0%
0%

Biden

24%

Sanders

16%

Warren

15%

Buttigieg

14%

Harris

7%

Klobuchar

2%

O'Rourke

2%

Bennet

1%

Booker

1%

Castro

1%

Delaney

1%

Gabbard

1%

Inslee

1%

Yang

1%

Bullock

0%

de Blasio

0%

Gillibrand

0%

Hickenlooper

0%

Messam

0%

Moulton

0%

Ryan

0%

Swalwell

0%

Williamson

0%
May 15-19, 2019
615 LV
May 15-19, 2019
615LV
24%
12%
24%
14%
10%
2%
1%
2%
1%
0%
1%
0%
0%
0%
5%
1%
1%
0%
1%
1%
1%

Biden

24%

Sanders

24%

Buttigieg

14%

Warren

12%

Harris

10%

O'Rourke

5%

Klobuchar

2%

Yang

2%

Booker

1%

Abrams

1%

Inslee

1%

Swalwell

1%

Delaney

1%

Gabbard

1%

Gillibrand

1%

Hickenlooper

1%

Bennet

0%

Bullock

0%

Castro

0%

Williamson

0%

Ryan

0%
Apr 30-May 2, 2019
576 LV
Apr 30-May 2, 2019
576LV
35%
10%
14%
11%
5%
4%
2%
3%

Biden

35%

Sanders

14%

Buttigieg

11%

Warren

10%

Harris

5%

Klobuchar

4%

O'Rourke

3%

Booker

2%
Apr 17-18, 2019
590 LV
Apr 17-18, 2019
590LV
19%
6%
19%
14%
6%
4%
4%
1%
1%
0%
2%
5%
1%
0%
1%
1%

Sanders

19%

Biden

19%

Buttigieg

14%

Harris

6%

Warren

6%

O'Rourke

5%

Booker

4%

Klobuchar

4%

Delaney

2%

Gabbard

1%

Gravel

1%

Yang

1%

Hickenlooper

1%

Gillibrand

1%

Inslee

0%

Castro

0%
Apr 4-9, 2019
351 LV
Apr 4-9, 2019
351LV
27%
7%
16%
9%
7%
4%
3%
1%
0%
2%
1%
0%
0%
0%
6%
1%
0%
1%
0%
1%
0%
0%
0%
0%

Biden

27%

Sanders

16%

Buttigieg

9%

Harris

7%

Warren

7%

O'Rourke

6%

Klobuchar

4%

Booker

3%

Castro

2%

Delaney

1%

Gillibrand

1%

Ryan

1%

Swalwell

1%

Yang

1%

Bullock

0%

de Blasio

0%

Gabbard

0%

Inslee

0%

Bennet

0%

Hickenlooper

0%

McAuliffe

0%

Messam

0%

Moulton

0%

Williamson

0%
Mar 21-24, 2019
500 LV
Mar 21-24, 2019
500LV
25%
8%
17%
6%
9%
6%
7%
1%
1%
1%
3%
0%
0%
0%
6%
1%
1%
0%
1%
0%

Biden

25%

Sanders

17%

Harris

9%

Warren

8%

Booker

7%

Buttigieg

6%

Klobuchar

6%

O'Rourke

6%

Delaney

3%

Castro

1%

Gabbard

1%

Gillibrand

1%

Inslee

1%

Swalwell

1%

Yang

1%

Bennet

0%

Bullock

0%

Hickenlooper

0%

McAuliffe

0%

Williamson

0%
Mar 21-24, 2019
249 LV
Mar 21-24, 2019
249LV
25%
9%
24%
11%
10%
2%
6%
0%
1%
1%
5%
0%
1%
1%

Biden

25%

Sanders

24%

Buttigieg

11%

Harris

10%

Warren

9%

Booker

6%

O'Rourke

5%

Klobuchar

2%

Hickenlooper

1%

Gabbard

1%

Castro

1%

Inslee

1%

Gillibrand

0%

Yang

0%
Mar 14-15, 2019
678 LV
Mar 14-15, 2019
678LV
29%
8%
15%
5%
6%
4%
7%

Biden

29%

Sanders

15%

Warren

8%

O'Rourke

7%

Klobuchar

6%

Harris

5%

Booker

4%
Mar 3-6, 2019
401 LV
Mar 3-6, 2019
401LV
27%
9%
25%
1%
7%
3%
3%
0%
0%
1%
1%
1%
1%
0%
0%
5%
0%
1%
0%
0%
0%
0%

Biden

27%

Sanders

25%

Warren

9%

Harris

7%

O'Rourke

5%

Booker

3%

Klobuchar

3%

Bennet

1%

Bullock

1%

Buttigieg

1%

Castro

1%

Delaney

1%

Inslee

1%

de Blasio

0%

Gabbard

0%

Gillibrand

0%

Hickenlooper

0%

Swalwell

0%

Williamson

0%

Yang

0%

Holder

0%

Bloomberg

0%
Jan 31-Feb 2, 2019
558 LV
Jan 31-Feb 2, 2019
558LV
25%
11%
10%
17%
5%
4%
4%
1%

Biden

25%

Harris

17%

Warren

11%

Sanders

10%

Klobuchar

5%

O'Rourke

4%

Booker

4%

Gillibrand

1%
Jan 30-Feb 2, 2019
260 LV
Jan 30-Feb 2, 2019
260LV
29%
11%
15%
0%
18%
3%
4%
0%
0%
2%
1%
6%
1%
4%

Biden

29%

Harris

18%

Sanders

15%

Warren

11%

O'Rourke

6%

Brown

4%

Booker

4%

Klobuchar

3%

Castro

2%

Delaney

1%

Gillibrand

1%

Yang

0%

Buttigieg

0%

Gabbard

0%
Dec 13-17, 2018
1,291 LV
Dec 13-17, 2018
1,291LV
20%
7%
20%
7%
5%
4%
0%
1%
1%
1%
19%
1%
1%
2%
5%
4%
1%
1%
0%
0%
0%

Biden

20%

Sanders

20%

O'Rourke

19%

Harris

7%

Warren

7%

Klobuchar

5%

Kennedy

5%

Booker

4%

Clinton

4%

Brown

2%

Castro

1%

Cuomo

1%

Bloomberg

1%

Delaney

1%

Gillibrand

1%

Kerry

1%

Swalwell

1%

Steyer

0%

McAuliffe

0%

Holder

0%

Schultz

0%
Dec 10-13, 2018
455 LV
Dec 10-13, 2018
455LV
32%
8%
19%
5%
3%
4%
0%
0%
1%
1%
0%
3%
11%
0%
0%
1%
0%
1%
0%
0%

Biden

32%

Sanders

19%

O'Rourke

11%

Warren

8%

Harris

5%

Booker

4%

Bloomberg

3%

Klobuchar

3%

Brown

1%

Castro

1%

Delaney

1%

Hickenlooper

1%

Bullock

0%

Garcetti

0%

Gillibrand

0%

Holder

0%

Inslee

0%

Steyer

0%

Swalwell

0%

Yang

0%
Dec 10-11, 2018
500 LV
Dec 10-11, 2018
500LV
30%
9%
13%
7%
10%
6%
1%
2%
11%
3%
2%
0%

Biden

30%

Sanders

13%

O'Rourke

11%

Klobuchar

10%

Warren

9%

Harris

7%

Booker

6%

Brown

3%

Bloomberg

2%

Kerry

2%

Delaney

1%

Garcetti

0%

Endorsements

FiveThirtyEight uses a point scale for tracking endorsements that weights potential endorsers according to their position. The map below shows what percentage of Iowa’s points each candidate has claimed and what percentage is still available, while the table tracks all the potential endorsers from the state and who, if anyone, they’ve endorsed. See all endorsements »

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