Horizon · our Election Day forecast: polls, plus fundamentals like incumbency, fundraising and past results.

Pulse · polls only: where the races stand today, with no fundamentals and wider uncertainty.

What's the difference?

Illinois › Illinois House of Representatives · State legislature · November 3, 2026 · Updated Oct 16, 2026

Illinois Representative District 48

Flip risk: Republican-held seat, a toss-up (51% chance it changes parties).

A toss-up: each side wins about half the simulations.

Zahorak (D)
51%
chance of winning
Sanalitro (R)
49%
Average margin
D+0.2
80% of outcomes
R+10 to D+11
Partisan lean
R+3
Polls
No pollsmodel only

Projected flip: Republican-held seat, Democrats favored (68%).

Zahorak is favored to win: Zahorak wins in 2 of every 3 simulations.

Zahorak (D)
68%
chance of winning
Sanalitro (R)
32%
Average margin
D+4.2
80% of outcomes
R+8 to D+17
Partisan lean
R+3
Polls
No pollsmodel only

Range of outcomes

Final margin across our simulations; the white dashes mark the middle 80%.

D+0.2R+20R+10EvenD+10D+20
D+4.2R+30R+20R+10EvenD+10D+20D+30

How the odds have moved

Chance of winning by forecast date.

0%25%50%75%100%AugSepOctNovNov 3Zahorak 51%Sanalitro 49%

Updated nightly. Each day is the current model run on the polls that had ended by then (how).

0%25%50%75%100%AugSepOctNovNov 3Zahorak 68%Sanalitro 32%

Updated nightly. Each day is the current model run on the polls that had ended by then (how).

The candidates

What goes into the forecast

Every ingredient's estimate of the final margin.

National environment
D+9.5Election Day forecast
Illinois state offices
+0.6Polls for governor, statewide and legislative races · details
Environment here
D+10.1Used by the fundamentals
Swing reaching this office
58%Of a shift in the environment, from past legislative races since 2016
Midwest adjustment
+0.3How legislative races in the region have run against lean and environment lately
← RepublicanDemocratic →Lean + environmentUsual vote, shifted by 58% of the environment andthe Midwest adjustmentD+5.8Fundamentals modelAdds incumbency, past results, money andexperienceR+0.2Polls in similar placesPolling of similar races in Illinois andlook-alike placesD+0.3Polling averageNo polls of this racenot availableHorizon forecastPolls + fundamentals, projected to Election DayD+0.2Pulse forecastPolls (and polling of similar places) only, todayD+4.2

Each estimate is a margin before national and statewide uncertainty is simulated. Horizon blends polls, fundamentals and a little of the similar-places estimate, weighting each by how precise it is; Pulse uses polls and similar places only.

Fundamentals inputs
Incumbency (+1 D, −1 R)-1
Fundraising edge (log ratio of individual money)-1.85
Elected-experience edge-0.67
First-term incumbent0
Seat's last result vs. expectation-10.23
Incumbent's last result vs. expectation-10.23

Polls

No public polls of this race. The forecast relies on fundamentals and on polling of similar places in the state.

The district

Lean R+3: how much more Democratic or Republican than the nation it votes for president.

Presidential vote

← RepublicanDemocratic →2016 presidentD+4.1D+1.9 vs. nation2020 presidentD+2.7R+1.9 vs. nation2024 presidentR+4.9R+3.4 vs. nation

Precinct results re-aggregated to the current district lines.

Who lives here

Population
96,578
People per km²
997
Adults with a B.A.+
41%
White, no degree
41%of adults
  • White 65%
  • Hispanic 16%
  • Black 3%
  • Asian 13%
  • Other / multiracial 4%

American Community Survey 2020–2024, aggregated from census tracts.

Past results

Results in the same-numbered district; earlier elections may have used different lines.

2024

52,108 votes · R+15.8
✓ Jennifer Sanalitro (R)57.9%
Maria C Vesey (D)42.1%

2024 President Vote in this district

51,647 two-party votes · R+4.9 · R+3.4 vs. the nation
✓ Donald Trump (R)52.5%
Kamala Harris (D)47.5%

2022

37,534 votes · R+10.1
✓ Jennifer Sanalitro (R)55.0%
Azam Nizamuddin (D)45.0%

2020 Earlier district lines

61,931 votes · D+7.5
✓ Terra Costa Howard (D)53.8%
Peter Breen (R)46.2%

2020 President Vote in this district

54,452 two-party votes · D+2.7 · R+1.9 vs. the nation
✓ Joe Biden (D)51.3%
Donald Trump (R)48.7%

2016 President Vote in this district

45,642 two-party votes · D+4.1 · D+1.9 vs. the nation
✓ Hillary Clinton (D)52.0%
Donald Trump (R)48.0%