Presidential elections · 2000–2024
Cook County, IL — Presidential Election Results (2000–2024)
In 2024, Cook County, Illinois voted for Kamala D. Harris (Democratic) by D+41.6 — 1,447,821 Democratic to 583,852 Republican of 2,079,239 votes cast. From 2020 to 2024 it shifted 8.7 points toward Republicans. That makes it 30.7 points more Democratic than Illinois overall (D+10.9).
Data: MIT Election Data & Science Lab, Harvard Dataverse.
Margin by election, 2000–2024
Democratic minus Republican, in points of all votes cast — blue bars Democratic, red Republican.
Every election in Cook County
| Year | Democratic | Republican | Other | Dem share | Rep share | Margin |
|---|---|---|---|---|---|---|
| 2024 | 1,447,821 | 583,852 | 47,566 | 69.6% | 28.1% | D+41.6 |
| 2020 | 1,725,973 | 558,269 | 37,244 | 74.3% | 24.0% | D+50.3 |
| 2016 | 1,611,946 | 453,287 | 93,382 | 74.7% | 21.0% | D+53.7 |
| 2012 | 1,488,537 | 495,542 | 27,518 | 74.0% | 24.6% | D+49.4 |
| 2008 | 1,629,024 | 487,736 | 20,706 | 76.2% | 22.8% | D+53.4 |
| 2004 | 1,439,724 | 597,405 | 12,305 | 70.2% | 29.1% | D+41.1 |
| 2000 | 1,280,547 | 534,542 | 50,818 | 68.6% | 28.6% | D+40.0 |
Cook County presidential elections — FAQ
Who carried Cook County in the 2024 presidential election?+
Kamala D. Harris (Democratic) carried Cook County, Illinois in 2024 by D+41.6, with 2,079,239 votes cast. Data: MIT Election Data & Science Lab.
How did Cook County shift between 2020 and 2024?+
Cook County shifted 8.7 points toward Republicans between 2020 (D+50.3) and 2024 (D+41.6).
Is Cook County more Democratic or Republican than Illinois overall?+
In 2024, Cook County went D+41.6 while Illinois overall went D+10.9 — 30.7 points more Democratic than the state.
Where does this election data come from?+
County-level presidential returns (2000–2024) come from the MIT Election Data and Science Lab (MEDSL), published on the Harvard Dataverse. pumsdata is an independent product that makes the data easy to map and compare, and is not affiliated with MEDSL or Harvard.