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 › U.S. House of Representatives · November 3, 2026 · Updated Oct 16, 2026

Illinois's 8th District

Bean is very likely to win: Bean wins in more than 99 of every 100 simulations.

Bean (D)
99%
chance of winning
Davis (R)
1%
Average margin
D+19.9
80% of outcomes
D+11 to D+29
Partisan lean
D+9
Polls
No pollsmodel only

Bean is very likely to win: Bean wins in 49 of every 50 simulations.

Bean (D)
97%
chance of winning
Davis (R)
3%
Average margin
D+17.9
80% of outcomes
D+7 to D+30
Partisan lean
D+9
Polls
No pollsmodel only

Range of outcomes

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

D+19.9R+40R+20EvenD+20D+40
D+17.9R+40R+20EvenD+20D+40

How the odds have moved

Chance of winning by forecast date.

0%25%50%75%100%AugSepOctNovNov 3Bean 99%Davis 1%

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

0%25%50%75%100%AugSepOctNovNov 3Bean 97%Davis 3%

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

The candidates

Democratic

Melissa Bean

Former U.S. representative (2005–2011)

Experience
Statewide office or Congress
Raised
$2.4M
From individuals
$1.6M
Spent
$2.1M
Cash on hand
$277.5K

Money: FEC, through Sep 30, 2026.

Profile and career · Wikipedia

Republican

Jennifer Davis

Service technology company founder

Experience
No elected office
Raised
$1.7M
From individuals
$690.7K
Spent
$1.3M
Cash on hand
$444.5K

Money: FEC, through Sep 30, 2026.

Profile and career

What goes into the forecast

Every ingredient's estimate of the final margin.

National environment
D+9.5Election Day forecast; federal races run in it
Swing reaching this office
78%Of a shift in the environment, from past House races since 2016
Midwest adjustment
+1.4How House races in the region have run against lean and environment lately
← RepublicanDemocratic →Lean + environmentUsual vote, shifted by 78% of the environment andthe Midwest adjustmentD+19.2Fundamentals modelAdds incumbency, past results, money andexperienceD+19.7Polls in similar placesPolling of similar races in Illinois andlook-alike placesD+20.2Polling averageNo polls of this racenot availableHorizon forecastPolls + fundamentals, projected to Election DayD+19.9Pulse forecastPolls (and polling of similar places) only, todayD+17.9

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)0
Fundraising edge (log ratio of individual money)0.66
Elected-experience edge1
First-term incumbent0
Seat's last result vs. expectation7.41
Incumbent's last result vs. expectation0

Polls

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

The district

Lean D+9: how much more Democratic or Republican than the nation it votes for president.

Presidential vote

← RepublicanDemocratic →2016 presidentD+16.8D+14.5 vs. nation2020 presidentD+15.8D+11.2 vs. nation2024 presidentD+7.1D+8.6 vs. nation

Precinct results re-aggregated to the current district lines.

Who lives here

Population
740,409
People per km²
981
Adults with a B.A.+
40%
White, no degree
33%of adults
  • White 52%
  • Hispanic 26%
  • Black 5%
  • Asian 14%
  • 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

303,073 votes · D+14.1
✓ Raja Krishnamoorthi (D)57.1%
Mark Rice (R)42.9%

2024 President Vote in this district

302,679 two-party votes · D+7.1 · D+8.6 vs. the nation
✓ Kamala Harris (D)53.6%
Donald Trump (R)46.4%

2022

207,215 votes · D+13.8
✓ Raja Krishnamoorthi (D)56.9%
Chris Dargis (R)43.1%

2020 Earlier district lines

254,578 votes · Uncontested by the other party
✓ Raja Krishnamoorthi (D)73.2%
Preston Gabriel Nelson (L)26.8%

2020 President Vote in this district

326,373 two-party votes · D+15.8 · D+11.2 vs. the nation
✓ Joe Biden (D)57.9%
Donald Trump (R)42.1%

2018 Earlier district lines

197,127 votes · D+31.9
✓ Raja Krishnamoorthi (D)66.0%
Jitendra "jd" Diganvker (R)34.0%

2016 Earlier district lines

248,571 votes · D+16.6
✓ Raja Krishnamoorthi (D)58.3%
Peter "pete" Dicianni (R)41.7%

2016 President Vote in this district

270,151 two-party votes · D+16.8 · D+14.5 vs. the nation
✓ Hillary Clinton (D)58.4%
Donald Trump (R)41.6%