U.S. Presidential Election Results at County Level from 1912 to 2024

Dave Leip's dataset provides U.S. Presidential county-level election results for presidential election years from 1912 through 2024. It also includes congressional district results for 2016 and select precinct results for 2020. The data is hosted by the Harvard Library E-Resources Licensed Data Dataverse and was last updated in May 2026.

Use Cases

• Modeling county-level voting patterns over time based on the 1912-2024 time series.
• Analyzing geographic shifts in political support based on county-level results.
• Comparing election results across different administrative levels (county, congressional district, precinct) for select years.
• Training models for election forecasting using historical county-level data.

Strengths

• Covers a long historical time series from 1912 through 2024.
• Includes results at multiple geographic scales: county, congressional district, and precinct for specific years.
• Last updated in May 2026, suggesting potential inclusion of recent election data.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment for large-scale analysis.
• Description metadata is limited; actual data quality requires manual inspection after download.

Provenance

Source

Leip, Dave; Harvard Library E-Resources Licensed Data Dataverse

Collection Method

Likely compiled from official state and county election records.

Time Range

1912 through 2024

Freshness

Last updated 2026-05-06 18:53:24; freshness should be verified.

Geography

United States, county-level