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

Updated October 22, 2026, 09:28 UTC

State legislatures › Illinois Senate

Illinois Senate District 11

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

Decided: only a Democrat is running · Mike Porfirio (D)

Illinois Senate District 11: Decided: only a Democrat is runningIllinois Senate 1: not up in 2026 (held by democrat); 2024 president D+37Illinois Senate 16: not up in 2026 (held by democrat); 2024 president D+43Illinois Senate 4: not up in 2026 (held by democrat); 2024 president D+41Illinois Senate 41: chance of a Democratic win <1%Illinois Senate District 11: Decided: only a Democrat is running11644111
Safe DLean DToss-upLean RSafe RHatched: not up in 2026 (shaded by holder) · dashed: other state

District 11 is safe Democratic. Of its 4 neighbouring districts, 3 favour Democrats, 1 favours Republicans.

StatusDecided: only a Democrat is running
CandidatesMike Porfirio (D)
Candidate list fromwikipedia primary results
Current memberMike Porfirio

How it has voted

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

Legislature 2022D+32
Governor 2022D+30
← RepublicanDemocratic →

Who lives here

Census Bureau, American Community Survey 2019-2023.

This districtIllinois
Median household income$77,861$81,702
Bachelor's degree or more (25+)23%37%
Median age3839
White (not Hispanic)31%59%
Black4%14%
Hispanic62%18%
Asian2%6%
Born abroad29%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.