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Who’s ahead in the Iowa Senate ?

An updating average, accounting for each poll's recency, sample size, methodology and house effects.

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Our average includes all candidates that FiveThirtyEight considers “major.” Candidates with insufficient polling data are not displayed in the averages. State polling averages are adjusted based on national trends, which means candidates’ averages can shift even in the absence of fresh state polls. Read more about the methodology.

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ADULTS

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LV

LIKELY VOTERS

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PollsterResultNet result
Datesi

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A

ADULTS

V

VOTERS

LV

LIKELY VOTERS

RV

REGISTERED VOTERS

PollsterResult

U.S. Senate, Iowa, 2020, General election

Nov. 1-2
871V
Nov. 1-2
871V
Public Policy Polling
 Greenfield
48%
 Greenfield
48%

Greenfield

48%

Ernst

47%
47%
Ernst  Greenfield+1
Oct. 29-Nov. 1
853LV
Oct. 29-Nov. 1
853LV
Civiqs
 Greenfield
50%
 Greenfield
50%

Greenfield

50%

Ernst

47%

Stewart

1%

Herzog

0%
47%
 ErnstGreenfield+3
Oct. 29-Nov. 1
1,084LV
Oct. 29-Nov. 1
1,084LV
Change Research
 Greenfield
48%
 Greenfield
48%

Greenfield

48%

Ernst

47%

Stewart

2%

Herzog

0%
47%
 ErnstGreenfield+1
Oct. 27-Nov. 1
951LV
Oct. 27-Nov. 1
951LV
Data for Progress
 Greenfield
49%
 Greenfield
49%

Greenfield

49%

Ernst

45%

Herzog

3%

Stewart

2%
45%
 ErnstGreenfield+4
Oct. 29-31
604LV
Oct. 29-31
604LV
Emerson College
 Greenfield
51%
 Greenfield
51%

Greenfield

51%

Ernst

48%
48%
Ernst  Greenfield+3
Oct. 30
400LV
Oct. 30
400LV
InsiderAdvantage
 Greenfield
45%
 Greenfield
45%

Greenfield

45%

Ernst

51%

Stewart

1%

Herzog

1%
51%
 ErnstErnst+6
Oct. 26-29
814LV
Oct. 26-29
814LV
Selzer & Co.
 Greenfield
42%
 Greenfield
42%

Greenfield

42%

Ernst

46%
46%
Ernst  Ernst+4
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Candidate is an incumbent

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Campaign poll

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