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U.S. House · Illinois · Nov 3 · 7 days out
Illinois House, district 6
Sean Casten (Democrat, incumbent) against Niki Conforti (Republican).
Where they stand · 63 points apart
Conforti is an estimateSolid is a voting record; hollow is read from the campaign’s own words. Biggest gaps first.
Sean CastenrecordNiki Confortiestimate
Money
FEC to Sep 30RaisedCasten$2.5MConforti$346kItemized, named donorsCasten$1.3MConforti$137kNamed donorsCasten999Conforti289Itemized from IllinoisCasten71%Conforti57%
The FEC doesn't name donors who give under $200, so their gifts count in Raised but not Itemized.
In their own words
Campaign sites and X“Delivering Commonsense Solutions for the 6th District”
“For no particular reason, here's a funny civics story. Last week, I stopped in to chat with students at LaGrange Highlands Middle school who were learning about the Constitution...” Casten · X post · Oct 20 · ↗
“I will work to curb the spending in WDC and stop tax increases on working families.” Conforti · Campaign site · Sep 29 · ↗
All market contracts · Kalshi and Polymarket · 4
| Candidate | Platform | Contract | Bid | Ask | Last | Volume | |
|---|---|---|---|---|---|---|---|
| Sean Casten | Kalshi | Democrat wins | 96% | 98% | 95% | $40 | Open ↗ |
| Sean Casten | Polymarket | Democrat wins | 95% | 97% | 96% | $20,012 | Open ↗ |
| Niki Conforti | Kalshi | Republican wins | 2% | 4% | 5% | $786 | Open ↗ |
| Niki Conforti | Polymarket | Republican wins | 2% | 3% | 3% | $23,677 | Open ↗ |
Prices in cents on the dollar, read Oct 27, 2026. A party contract pays if that party wins the seat.
Also on the Illinois ballot
All 18 →Statement estimate · odds are a market close, not a poll