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Member brief · 119th Congress

Sen. Joni Ernst

R · Republican · U.S. Senator, Iowa1

In Congress
Since 2015 · 11 years
 Next election
Nov 3, 2026
 Committee leadership (+1 more)
Chairman, Small Business and Entrepreneurship
Chairman, Rural Development, Energy, and Credit

CommitteesAgriculture, Nutrition, and Forestry; Armed Services; Homeland Security and Governmental Affairs; Chairman, Small Business and Entrepreneurship2

Participation3

98 / 100

Chamber median 98
894 of 915 roll calls

Party unity3

100 / 100

Chamber median 99
on 822 party-line votes

Cross-party agreement3

8 / 100

Chamber median 9
on 872 contested votes

Ideology score4

+0.54

Chamber median +0.32
−1 left · +1 right

Notable votes and votes by issue

In the full brief: five notable recent votes chosen by a fixed rule (most recent breaks with party first), each with the member’s vote, the party’s position and a source, plus how often Ernst votes with the party on each issue.

Full briefs are part of Oathstar Pro. Team plans add alignment with your own scorecard and your PAC’s giving.

Money and lobbying

In the full brief: how many of Ernst’s PACs belong to organizations that lobbied on bills Ernst voted on or cosponsored, with the dollars beside the chamber median; the top bills; campaign totals and the top PACs.

Full briefs are part of Oathstar Pro.

Votes most like5

R Alan Armstrong OK 99% of 174
R James Lankford OK 99% of 867
R Bill Hagerty TN 99% of 841

Share of roll calls both voted on where they voted the same way.

Next race

Nov 3, 2026 · Not on the November ballot7

On the November ballot

Josh TurekDemocratic
Ashley HinsonRepublican
Thomas LaehnLibertarian

Data as of Nov 4, 2026 · votes through Sep 30, 2026 · Method: https://oathstar.com/methodology · Live profile: https://oathstar.com/people/joni-ernst

  1. 1. Member record and terms: congress.gov; unitedstates/congress-legislators, retrieved 2026-11-04. www.congress.gov/people/E000295
  2. 2. Committees: unitedstates/congress-legislators, retrieved 2026-11-04. github.com/unitedstates/congress-legislators
  3. 3. Participation, party unity, cross-party agreement, votes by issue: Oathstar from Voteview roll calls, 119th Congress, retrieved 2026-11-04. voteview.com/person/41502
  4. 4. Ideology: DW-NOMINATE first dimension, Voteview, 119th Congress. voteview.com/person/41502
  1. 5. Votes most like: Oathstar from Voteview roll calls, 119th Congress. voteview.com/data
  2. 6. Candidates: FEC filings, 2026 IA-SENATE race, retrieved 2026-11-04. www.fec.gov/data/elections/senate/IA/2026/
  3. 7. November ballot: https://en.wikipedia.org/wiki/2026_United_States_Senate_elections, as of 2026-10-05. en.wikipedia.org/wiki/2026_United_States_Senate_elections

Prepared with Oathstar · oathstar.com

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