Rock Island County, IL — Elections & Voting
Presidential election results and party lean trends
Election Overview
Source: Rock Island County (2024)2024 Winner
Democrat
Dem Votes
34,126
53.9%
GOP Votes
28,061
44.4%
Total Votes
63,267
Margin
D+9.6%
Shift from 2020
R+2.5pp
vs prior election
📊Election Results by Year
2016–2024📈Partisan Lean Trend
D+9.6%Election History
Source: County-Level Election Results| Year | Dem Votes | GOP Votes | Total | Dem % | GOP % | Margin |
|---|---|---|---|---|---|---|
| 2024 | 34,126 | 28,061 | 63,267 | 53.9% | 44.4% | D+9.6 |
| 2020 | 36,691 | 28,603 | 66,817 | 54.9% | 42.8% | D+12.1 |
| 2016 | 32,258 | 26,969 | 62,971 | 51.2% | 42.8% | D+8.4 |
In the 2024 presidential election, Rock Island County recorded 63,267 total votes. Democrats won the county with 53.9% of the vote compared to 44.4% for Republicans, a margin of D+9.6%. Compared to 2020, the margin shifted R+2.5pp from the previous election. Since 2016, Rock Island County has shifted 1.2 percentage points toward Democrats.