Election forecasts you can inspect.Tested models, shown with their sources and their uncertainty.

Updated October 22, 2026, 09:28 UTC

State legislatures › Illinois House

Illinois House District 98

2026 forecast · Updated October 22, 2026, 09:28 UTC

98% chance of a Democratic win · Natalie A. Manley (D), Nona Parker (R)

Illinois House District 98: ForecastIllinois House 41: chance of a Democratic win 98%; 2024 president D+24Illinois House 85: chance of a Democratic win 99%; 2024 president D+18Illinois House 86: chance of a Democratic win >99%; 2024 president D+8Illinois House 97: chance of a Democratic win 93%; 2024 president D+4Illinois House District 98: Forecast4185978698
Safe DLean DToss-upLean RSafe RHatched: not up in 2026 (shaded by holder) · dashed: other state

District 98 is safe Democratic. Of its 4 neighbouring districts, 4 favour Democrats.

StatusForecast
Chance of a Democratic win98%
Likely margin (80% range)D+19 to D+65, middle D+42
CandidatesNatalie A. Manley (D), Nona Parker (R)
Candidate list fromaggregator (The Ballot Brief)
Current memberNatalie Manley

How it has voted

On its current lines. Legislative contests and the top-of-ticket vote inside the district.

Legislature 2022D+20
Governor 2022D+20
Legislature 2024uncontested (D)
President 2024D+16
← RepublicanDemocratic →

Who lives here

Census Bureau, American Community Survey 2019-2023.

This districtIllinois
Median household income$96,126$81,702
Bachelor's degree or more (25+)33%37%
Median age3839
White (not Hispanic)49%59%
Black14%14%
Hispanic27%18%
Asian7%6%
Born abroad17%14%
Jobs in manufacturing12%12%
Jobs in farming or mining0%1%

Initial version. This model was tested on every state legislative election from 1994 to 2024 before publication, forecasting each as if it had not happened. It beat the simple rule “the party that holds the seat keeps it”, and its chamber seat counts were off by 2.9 seats on average (target: under 3). Districts with no two-party race last time are read from their own presidential vote, a change tested in advance that cut their average error from 17 to 13 points. It missed one of its five accuracy targets: in 2024, the calmest year on record, its ranges were wider than they needed to be (92% of results fell inside its 80% ranges; target: at most 88%). Treat the ranges as cautious. The full test record and code.