Poll Chart

2016 Iowa Democratic Presidential Caucus

Currently tracking 81 polls from 25 pollsters
Updated 10 months ago
Election on February 1, 2016 results

This chart combines the latest opinion polls into trendlines and is updated whenever a new poll is released.

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Our averages don't add up to 100% because we calculate each trendline separately.

Latest Polls

Poll
Sanders
Biden
Clinton
O'Malley
Webb
Chafee
Lessig
Undecided
Other
Jan 29 – Jan 31, 2016
300 Likely Voters - Democrat
43 51 4 3
Jan 25 – Jan 31, 2016
919 Likely Voters - Democrat
49 46 3 2
Jan 26 – Jan 29, 2016
602 Likely Voters - Democrat
42 45 3 9
Jan 26 – Jan 27, 2016
810 Likely Voters - Democrat
42 53 5
Jan 26 – Jan 27, 2016
851 Likely Voters - Democrat
40 48 7 5
Jan 24 – Jan 26, 2016
426 Likely Voters - Democrat
45 48 3 4 0
Jan 23 – Jan 26, 2016
504 Likely Voters - Democrat
42 47 6 6
ARG
Jan 21 – Jan 24, 2016
400 Likely Voters - Democrat
48 45 3 4
Jan 18 – Jan 24, 2016
606 Likely Voters - Democrat
49 45 4 2
Jan 5 – Jan 22, 2016
226 Likely Voters - Democrat
45 47 1 4 3
FOX
Jan 18 – Jan 21, 2016
423 Likely Voters - Democrat
42 48 3 5 2
Jan 18 – Jan 21, 2016
490 Likely Voters - Democrat
47 46 5 1
Jan 18 – Jan 20, 2016
258 Likely Voters - Democrat
43 52 3 2
CNN
Jan 15 – Jan 20, 2016
280 Likely Voters - Democrat
51 43 4 1 1
Jan 18 – Jan 19, 2016
570 Likely Voters - Democrat
39 48 7 6
Jan 13 – Jan 18, 2016
500 Likely Voters - Democrat
30 59 7 5
Jan 11 – Jan 12, 2016
461 Likely Voters - Democrat
36 57 7
Jan 8 – Jan 10, 2016
580 Likely Voters - Democrat
40 46 8 5
Jan 7 – Jan 10, 2016
504 Likely Voters - Democrat
40 42 4 14
ARG
Jan 6 – Jan 10, 2016
600 Likely Voters - Democrat
47 44 3 5 0
Jan 5 – Jan 10, 2016
492 Likely Voters - Democrat
49 44 4 3
Jan 4 – Jan 8, 2016
503 Likely Voters - Democrat
42 49 5 5
Jan 2 – Jan 7, 2016
422 Likely Voters - Democrat
45 48 5 3 0
Dec 18 – Dec 21, 2015
418 Likely Voters - Democrat
31 49 10 10
Dec 14 – Dec 17, 2015
602 Likely Voters - Democrat
45 50 4 1
Dec 10 – Dec 13, 2015
526 Likely Voters - Democrat
34 52 7 6
Dec 4 – Dec 13, 2015
727 Likely Voters - Democrat
40 51 6 3
Dec 7 – Dec 10, 2015
501 Likely Voters - Democrat
27 59 4 10
Dec 7 – Dec 10, 2015
400 Likely Voters - Democrat
39 48 4 8
FOX
Dec 7 – Dec 10, 2015
357 Likely Voters - Democrat
36 50 5 6 4
Dec 3 – Dec 6, 2015
405 Likely Voters - Democrat
33 55 6 3
CNN
Nov 28 – Dec 6, 2015
442 Likely Voters - Democrat
36 54 4 3 2
Nov 16 – Nov 22, 2015
543 Likely Voters - Democrat
42 51 4 3
Nov 15 – Nov 19, 2015
602 Likely Voters - Democrat
44 50 5 1
Nov 10 – Nov 16, 2015
211 Registered Voters - Democrat
37 55 2 6 0
Nov 2 – Nov 15, 2015
496 Likely Voters - Democrat
28 50 3
CNN
Oct 29 – Nov 4, 2015
498 Likely Voters - Democrat
37 55 3 4 1
Oct 30 – Nov 1, 2015
615 Likely Voters - Democrat
25 57 7 1 9
Oct 31 – Oct 31, 2015
273 Likely Voters - Democrat
25 57 3 15
Oct 29 – Oct 31, 2015
681 Likely Voters - Democrat
32 46 5 17
Oct 22 – Oct 25, 2015
400 Likely Voters - Democrat
24 65 5 1 4
Oct 19 – Oct 22, 2015
500 Likely Voters - Democrat
24 62 3 1 0 10
Oct 15 – Oct 22, 2015
555 Likely Voters - Democrat
43 46 3 0 1 0 7
Oct 14 – Oct 20, 2015
592 Likely Voters - Democrat
40 51 4 0 0 4
Oct 16 – Oct 19, 2015
402 Likely Voters - Democrat
41 48 2 1 1 0 3
Sep 23 – Sep 30, 2015
348 Registered Voters - Democrat
36 47 4 1 0 13
Sep 25 – Sep 27, 2015
328 Likely Voters - Democrat
31 12 40 2 1 16
Sep 18 – Sep 20, 2015
494 Likely Voters - Democrat
22 17 43 3 3 2 0 9
Sep 3 – Sep 10, 2015
646 Likely Voters - Democrat
43 10 33 5 1 1 7
Aug 27 – Sep 8, 2015
832 Likely Voters - Democrat
41 12 40 3 1 0 3
Aug 26 – Sep 2, 2015
345 Registered Voters - Democrat
37 48 4 2 1 8
Aug 29 – Aug 31, 2015
421 Likely Voters - Democrat
17 5 45 5 1 1 14
Aug 24 – Aug 27, 2015
502 Likely Voters - Democrat
23 16 48 4 0 1 6
Aug 23 – Aug 26, 2015
400 Likely Voters - Democrat
30 14 37 3 2 1 14
Aug 20 – Aug 24, 2015
500 Likely Voters - Democrat
20 11 54 4 1 0 10 0
CNN
Aug 7 – Aug 11, 2015
429 Likely Voters - Democrat
31 12 50 1 1 0 4 1
Aug 7 – Aug 9, 2015
567 Likely Voters - Democrat
25 52 7 3 1 11
Jul 29 – Jul 29, 2015
236 Likely Voters - Democrat
24 6 51 5 1 2
Jul 14 – Jul 21, 2015
320 Likely Voters - Democrat
26 55 4 2 1 13
Jun 27 – Jun 29, 2015
1,022 Likely Voters - Democrat
20 63 5 3 1 8
Jun 20 – Jun 29, 2015
761 Likely Voters - Democrat
33 7 52 3 1 0 5
Jun 19 – Jun 22, 2015
401 Likely Voters - Democrat
24 50 2 0 23
May 31 – Jun 8, 2015
322 Registered Voters - Democrat
12 9 54 1 1 0 20 3
May 25 – May 29, 2015
437 Likely Voters - Democrat
16 8 57 2 2 14
Apr 25 – May 4, 2015
692 Likely Voters - Democrat
15 11 60 3 3 0 7
Apr 23 – Apr 26, 2015
466 Likely Voters - Democrat
14 62 6 3 2 13
Apr 21 – Apr 23, 2015
491 Likely Voters - Democrat
2 6 57 2 1 0 17
Feb 16 – Feb 23, 2015
619 Likely Voters - Democrat
5 7 61 0 2 6
Feb 3 – Feb 10, 2015
320 Likely Voters - Democrat
7 12 68 1 1 12
Jan 26 – Jan 29, 2015
401 Likely Voters - Democrat
5 9 56 1 3 10

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