Voting & Elections in Waterloo, IA
Presidential election results and party lean trends
County-level data: Election results are reported at the county level. Waterloo is located in Black Hawk County, IA. Results reflect all voters in the county, not just those in Waterloo.
Election Overview
Source: Black Hawk County (2024)2024 Winner
Democrat
Dem Votes
31,299
50.0%
GOP Votes
30,572
48.8%
Total Votes
62,653
Margin
D+1.2%
Shift from 2020
R+7.9pp
vs prior election
📊Election Results by Year
2016–2024📈Partisan Lean Trend
D+1.2%Election History
Source: County-Level Election Results| Year | Dem Votes | GOP Votes | Total | Dem % | GOP % | Margin |
|---|---|---|---|---|---|---|
| 2024 | 31,299 | 30,572 | 62,653 | 50.0% | 48.8% | D+1.2 |
| 2020 | 35,647 | 29,640 | 66,593 | 53.5% | 44.5% | D+9.0 |
| 2016 | 32,006 | 27,382 | 63,221 | 50.6% | 43.3% | D+7.3 |
In the 2024 presidential election, Black Hawk County recorded 62,653 total votes. Democrats won the county with 50.0% of the vote compared to 48.8% for Republicans, a margin of D+1.2%. Compared to 2020, the margin shifted R+7.9pp from the previous election. Since 2016, Black Hawk County has shifted 6.2 percentage points toward Republicans.