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Member brief · 119th Congress

Rep. Sean Casten

D · Democrat · U.S. Representative, Illinois 6th District1

In Congress
Since 2019 · 7 years
 Next election
Nov 3, 2026
 Committee leadership
None

CommitteesFinancial Services; Joint Economic Committee2

Participation3

99 / 100

Chamber median 98
670 of 674 roll calls

Party unity3

99 / 100

Chamber median 98
on 468 party-line votes

Cross-party agreement3

11 / 100

Chamber median 12
on 523 contested votes

Ideology score4

−0.63

Chamber median +0.19
−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 Casten votes with the party on each issue.

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Votes most like5

D Adam Smith WA-9 98% of 499
D Jennifer L. McClellan VA-4 98% of 522
D Linda T. Sánchez CA-38 98% of 513

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

Next race

Nov 3, 2026 · On the November ballot7

On the ballot against them

Niki ConfortiRepublican

Data as of Oct 5, 2026 · votes through Sep 16, 2026 · Method: https://oathstar.com/methodology · Live profile: https://oathstar.com/member/sean-casten

  1. 1. Member record and terms: congress.gov; unitedstates/congress-legislators, retrieved 2026-10-05. www.congress.gov/member/C001117
  2. 2. Committees: unitedstates/congress-legislators, retrieved 2026-10-05. github.com/unitedstates/congress-legislators
  3. 3. Participation, party unity, cross-party agreement, votes by issue: Oathstar from Voteview roll calls, 119th Congress, retrieved 2026-10-05. voteview.com/person/21906
  4. 4. Ideology: DW-NOMINATE first dimension, Voteview, 119th Congress. voteview.com/person/21906
  5. 5. Votes most like: Oathstar from Voteview roll calls, 119th Congress. voteview.com/data
  6. 6. Candidates: FEC filings, 2026 IL-6 race, retrieved 2026-10-05. www.fec.gov/data/elections/house/IL/06/2026/
  7. 7. November ballot: https://en.wikipedia.org/wiki/2026_United_States_House_of_Representatives_elections_in_Illinois#District_6, as of 2026-10-05. en.wikipedia.org/wiki/2026_United_States_House_of_Representatives_elections_in_Illinois#District_6

Prepared with Oathstar · oathstar.com

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