Illinois 9th District
Currently held by a Democrat · open seat
Democrat
Daniel Biss
>99.9%
Republican
John Elleson
<0.1%
ForecastSafe D
- Projected margin
- D+45.6
- 80% range
- D+30.4 to D+60.7
- Partisan lean
- D+38.6
- Uncertainty multiplier
- 2.01×
The 80% range comes from 200,000 simulations in which this race’s error is correlated with every other race through the national, state and demographic layers.
How the estimate is built
100.0%
Fundamentals 100.0%
- Polling average
- no polls
- Fundamentals
- D+46.2
- Blended
- D+46.2
- Similar-race shift
- −2.3
Polling
No public polling of this matchup. The forecast rests on fundamentals plus the polling residuals of demographically and politically similar races — which is the normal case: most of the 435 House seats are never polled.
Fundamentals
- Partisan lean
- D+38.6
- Elasticity
- 1.00
- Incumbency
- 0.0
- Candidate experience
- 0.0
- Fundraising
- +4.4
- National environment
- D+5.3
- Expected margin
- D+48.4