Worldwide Elections Guide: US Election Maps & Geospatial Data

GIS Data & Maps

Redistricting Data Hub
One stop shop for data to draw Community of Interest or District maps. Includes Precinct Boundary and Election Results, Aggregated Voter File Data, Incumbent Addresses (by request), Population Projections, PL 94-171, Legislative Boundaries, American Community Survey (ACS), Citizen Voting Age Projections (CVAP) and TIGER Boundary files.
Precinct-level general election results + shapefiles - Voting and Election Science Team
Precinct-level general election results + shapefiles starting with 2015.
United States Congressional District Shapefiles
This site provides digital boundary definitions for every U.S. Congressional District in use between 1789 and 2012.
New Area- and Population-based Geographic Crosswalks for U.S. Counties and Congressional Districts, 1790-2020
A common problem in applied research involves harmonizing geographic units across time or different levels of aggregation. We provide crosswalks that allow researchers i) to harmonize U.S. county boundaries over time across Census decades and ii) to generate congressional district level variables from county-level data.

Social Explorer
Social Explorer Geodata includes geographies such as U.S. Congressional District, U.S. State Legislative District – Lower Chamber (SLDL), U.S. State Legislative District – Upper Chamber (SLDU).

Social Explorer
1790-present. This site combines data from the U.S. Census of Population and Housing & the American Community Survey (ACS) with a user friendly interface, allowing the creation of maps & statistical tables. Census Tract boundaries are available back to 1940. Now also includes data on U.S. elections, business pattern, environmental summary, health, religion, and crime; the UK and Canadian censuses; Irish religious data; World Development Indicators, and EuroStat. Presidential, senatorial, congressional and gubernatorial election data comes from Dave Leip's Atlas of U.S. Presidential Elections and is available for map presentation only.

New York Times: An Extremely Detailed Map of the 2020 Election
Precinct-level map. This map has detailed data from 2,523 of 3,143 counties in 47 states, representing 89% of all votes cast. It was last updated on March 30.
New York Times: An Extremely Detailed Map of the 2016 Election
Stanford Map of 2008 Precinct Winners
Voting America United States Politics, 1840 - 2008
Voting America encourages users to think about US political history by allowing two types of comparison. Animations of a single type of map--say, measuring the winner of presidential elections at the county level--allow for comparisons across time. Users can also explore a single election by looking at patterns across a number of variables, including the percentage of votes won by parties, the winner of a given district, or the distribution of votes across the United States.
Mapping Early American Elections: 1788–1825
Mapping Early American Elections provides interactive maps and tables of U.S. Congressional elections during the First Party System, contextual essays, open access data, and tutorials.

Dave Leip's Atlas of U.S. Presidential Elections
Aggregated Official Results of Past Elections (Maps & Data) with state-level data tables for President back to 1824 and Senator and Governor back to 1990. Detailed national results for major and minor candidate for U.S. presidential election from 1789 to present. Also has state-level data tables for Presidential primaries back to 1992. Site also has information on candidates, parties, electoral vote total, maps, charts, and more.
Presidential Elections 1789-2012
Archive of The National Atlas of the United States of America printable maps for presidential elections 1789-2012

National atlas of the United States of America. Presidential elections, 1789-2008 by U.S. Department of the Interior, U.S. Geological Survey
Call Number: Maps Cases, Geisel Floor2 West G3701.F9 2009 .G4
Publication Date: 2009
Atlas of California Presidential Elections, 1932-1996 by Alan W. Miller (Editor)
Call Number: Maps, Atlases, Geisel Floor2 West G1526.F9 M6 1997
ISBN: 0964531860
Publication Date: 1997-12-01