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Presidential and Congressional Election Data, 2012-2024

State, county, and congressional district election results from the 2012, 2016, 2020, and 2024 US elections.

Data is sourced from state secretary of state electoral results websites.

Geographical Data (States and Counties only)

ST: US Postal Service two-letter state abbreviation
Name: The name of the state, county, or district
GEOIDFQ: Fully-qualified GEOIDs derived from Federal Information Pocessing Standards (FIPS) codes. These can be used to join with other USCB data tables and TIGER shapefiles.
Latitude: Latitude of the state's centroid
Longitude: Longitude of the state's centroid
Land Square Miles: Land area in square miles from the USCB
Water Square Miles: Water area in square miles from the USCB

Electoral College (States only)

Electoral_College: Number of electoral college votes for each state

Election Results

2012, 2016, 2020, and 2024 presidential election results (states and counties)

2024 US House of Representatives election results (119th house districts)

Winner_YYYY: Candidate that won the area
Votes_Dem_YYYY: Number of votes for the Democratic candidate
Percent_Dem_YYYY: Percent of total votes for the Democratic candidate
Votes_GOP_YYYY: Number of votes for the GOP (Republican) candidate
Percent_GOP_YYYY: Percent of total votes for the GOP(Republican) candidate
Votes_Other_YYYY: Votes for other candidates and write-ins, where available

Senate Data (States only)

Senators are elected every six years with terms staggered into three different classes spaced two years apart.

Class I (Senate1) = 2024
Class II (Senate2) = 2020
Class III (Senate3) = 2022

Those class numbers are used in the data to identify senate offices for each state.

SenateX_Name: Name of the senator in class X.
SenateX_Party: Political party of the senator in class X
SenateX_Year: Year the senator in classX was most recently elected. May be offset from other members of the class by special elections.
SenateX_Votes: Number of votes received by the senator in the most recent election
SenateX_Percent: Percent of total votes received by the senator in the most recent election

Demographics

US Census Bureau. n.d. "2019 - 2023 American Community Survey 5-Year Estimates." Accessed 26 January 2025. https://data.census.gov.

Median_Household_Income (DP03_0062E): Median household income and benefits in 2023 inflation-adjusted dollars
Median_Age (DP05_0018E): Median age in years
Percent_Under_18 (DP05_0019PE): Percent of total population under 18 years of age
Total_Population (DP05_0001E): Total population
Percent_Bachelors_Degree (DP02_0065PE): Percent of population 25 years or older with a bachelor's degree

Long Format

CSV files in long format are available for easier analysis in Python or R. 2024 data has complete president by state, president by county, US senate, and US congressional district results, including write-in and third-party candidates. 2022, 2020, 2016, and 2012 data has president by state and some additional data.

GEOIDFQ: Fully-qualified GEOID incorporating a prefix and FIPS code for the area.

0400000USxx for statewide president and US senator
0500000USxxxxx for county presidential election results
5001900USxxxx for house districts

ST: Two-letter USPS state code
Area: State name, county name, or congressional district (District x)
Year: 2024
Office: President, Senate1, Senate2, Senate3, or House
Candidate: Candidate name
Party: Candidate party
Votes: Number of votes for the candidate

Data Sources

Polygons

States and counties: US Census Bureau (USCB). 2024. "2023 Cartographic Boundary Files." Modified 15 April. https://www.census.gov/geographies/mapping-files/time-series/geo/cartographic-boundary.html.

109th US House of Representatives districts: US Census Bureau (USCB). 2024. "TIGER/Line Shapefiles: Congressional Districts." Modified 9 October. https://www.census.gov/geographies/mapping-files/time-series/geo/tiger-line-file.html.