UPDATED Oct. 6, 2022, at 4:13 PM

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Who’s ahead in the Iowa Senate race?

An updating average, accounting for each poll’s quality, recency, sample size and partisan lean.

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.

DatesSamplei

SAMPLE TYPES

A

ADULTS

V

VOTERS

LV

LIKELY VOTERS

RV

REGISTERED VOTERS

PollsterResultNet result
Datesi

SAMPLE TYPES

A

ADULTS

V

VOTERS

LV

LIKELY VOTERS

RV

REGISTERED VOTERS

PollsterResult

Polls ending Oct. 3, 2022

U.S. Senate, Iowa, 2022
Icon indicating this set of polls has an average.AVG.

600LV
Oct.2-4
600LV
Franken
40%
Franken
40%

Franken

40%

Grassley

54%
54%
Grassley  Grassley+14

Sept. 7, 2022

U.S. Senate, Iowa, 2022
Icon indicating this set of polls has an average.AVG.

1,143LV
Sep.3-8
1,143LV
Franken
44%
Franken
44%

Franken

44%

Grassley

48%
48%
Grassley  Grassley+4

July 13, 2022

U.S. Senate, Iowa, 2022
Icon indicating this set of polls has an average.AVG.

600LV
Jul.13-14
600LV
Franken
43%
Franken
43%

Franken

43%

Grassley

52%
52%
Grassley  Grassley+8

July 12, 2022

U.S. Senate, Iowa, 2022
Icon indicating this set of polls has an average.AVG.

597LV
Jul.10-13
597LV
Franken
39%
Franken
39%

Franken

39%

Grassley

47%
47%
Grassley  Grassley+8

July 3, 2022

U.S. Senate, Iowa, 2022
Icon indicating this set of polls has an average.AVG.

1,488LV
Jun.30-Jul.4
1,488LV
Franken
44%
Franken
44%

Franken

44%

Grassley

49%
49%
Grassley  Grassley+5
Icon indicating this set of polls has an average.avg.

Indicates a polling average for this poll type

Candidate is an incumbent

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Democratic-funded

Republican-funded

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The position of the flag indicates whether the organization is partisan. Organizations are considered partisan if they operate on behalf of a candidate, party, campaign committee, PAC, super PAC, hybrid PAC, 501(c)(4), 501(c)(5) or 501(c)(6) organization that conducts a large majority of its political activity on behalf of one political party.

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