Democratic primary · March 17, 2026
Illinois house Democratic primary
Sean Casten won the Democratic primary on March 17, 2026, advancing to the general election on November 3, 2026.
Caution · early warning
Editorial raters moved while polling has gone quiet
The last rating change here was 22d ago, but only 0 polls have landed in the last 60 days. When raters move and pollsters don't, the rating shift may be running ahead of the data. Watch for a late-cycle correction in either direction.
Where this race stands
VerifiedShowing the Democratic primary view. General-election ratings, forecasts, and tipping-point odds aren't meaningful for a single-party primary — switch to the general election view for those.
All polls · 0 results
Democratic primary pollsNo polls have been published for this primary yet. When pollsters start covering the race, individual polls will be listed here with sample size, lean, and trust signals.
Endorsements · Democratic primary · 18 total
Source · Wikipedia · 0 candidates with no endorsements yetSean Casten · 18
DSean Casten18 endorsers
Most notable · Chicago Tribune · (Democratic primary only)
Organizations16
Organizations · 16
- 314 Action
- AFL-CIO · s AFL-CIO
- Chicago Federation of Labor
- Citizen Action · Illinois
- Cook County College Teachers Union · Local 1600
- Humane World Action Fund
- Illinois Federation of Teachers
- International Union of Operating Engineers · Locals 150 and 399
- J Street PAC
- Jewish Democratic Council of America
- Joint Action Committee for Political Affairs
- League of Conservation Voters · Action Fund
- Planned Parenthood Action Fund
- Plumbers · Local 130
- SEIU · Healthcare
- Sierra Club
Newspapers2
Newspapers · 2
- Chicago Tribune · (Democratic primary only)
- Daily Herald
Money in this primary
FEC · per-candidate committees · last filing 2026-02-20In the news
17 shown · last 30d · Google NewsNews volume · 30d
17 articles · building history
News volume · last 30d
Articles17
Trendbuilding history
Article counts indexed by Google News; the sparkline traces weekly volume across the window.
Net favorability
+0.29
Coverage lean (D−R) · shift −0.29 wk
Net favorability
Score+0.29
Week-over-weekshift −0.29 wk
Tone of coverage, D minus R, scored from −1 (all R-favorable) to +1 (all D-favorable). 0 is balanced.
Coverage tilt
D 29%
Neutral 71%
29% of outlets rated · by editorial lean
Coverage tilt · by outlet lean
D-leaning outlets29%
Neutral71%
R-leaning outlets0%
29% of outlets classified by editorial lean
W
Benton steps down from Illinois House seat
S
Plainfield Democrat Benton resigns Illinois House seat after ethics investigation
S
Rich Miller: Illinois AFL-CIO unlikely to withhold endorsements
A
Supreme Court mail - in ballots ruling : Illinoisans praise decision affirming election administration largely under state control
C
Illinois AFL - CIO unlikely to withhold endorsements
W
Natalie Phelps Finnie to fill Illinois House seat vacated by Brandon Phelps
B
Watch Rep. Casten: Encouraged by Johnson Move on Housing Bill
N
Illinois Second Congressional District 2026: Latest Polls
A
Illinois Primary Results 2026: Senate, House and Governor
A
Illinois U.S. House Primary Election Live Results 2026
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Verification trail
Polls verified0 / 0deterministic
Polls flagged—none
Markets ingested1 platformupdated 11h ago
FEC filingssyncedcommittee + IE · 2026-02-20
Endorsements26 totalWikipedia scrape
News coverage17 / 30dGoogle News
Method · bounds + percentage totals + date-order checks