See how each district has voted in every House election since 1840 with this interactive from the University of Richmond and Virginia Tech.

This interactive tool lets users explore the outcomes of every US presidential election from George Washington's uncontested 1789 victory through 2024, showing how electoral votes, state results, and shifting coalitions shaped each race.

This University of California, Santa Barbara archive compiles presidential election data from 1789 to the present, including popular vote totals, turnout figures, and contextual resources that explain how the electoral process and political landscape have evolved.

Conducted once every 10 years, the US Census determines how House seats are reapportioned among the states. The 2020 results shifted representation as state population growth and decline altered the geographic balance of political power.

Ever wonder how much of each group make up the American voting bloc? Find raw data from the '16 and '18 elections broken out by a variety of factors (click on "validated voters database" link).

The National Conference of State Legislatures maintains a live tracker showing where mid-decade congressional redistricting is underway, detailing which states are pursuing new maps, the legislative and constitutional methods being used, and how courts are responding as the 2026 elections approach.

This Pudding interactive analyzes every mention of "democracy" in the Congressional Record over 145 years, charting how the word shifted from a partisan label to a concept, and tracking when lawmakers warned the system itself was under threat.

Every 10 years, states redraw congressional and legislative districts based on census data to ensure equal population. Legislatures usually control the process, though some states use independent commissions to curb partisan influence.

Analysts reported that the 2022 midterms featured the lowest share of competitive congressional districts since 1970, reflecting how modern redistricting has increasingly produced safe seats and reduced voter choice.

Based on input from redistricting experts and political scientists, this resource identifies and ranks the most extreme congressional gerrymanders of the 2020s, examining how map design, cracking, and packing reduce competition and distort representation across states.

The highly-respected Cook Political Report rates how partisan--and therefore, how safe--every district in the US is. Hover over your home district to see the score.

Beginning in Texas, Republican-controlled legislatures in Missouri, Florida, Ohio, and North Carolina moved to redraw maps before 2030—an uncommon mid-decade effort aimed at securing additional congressional seats.

This video tracks Mark Alford, who has represented Missouri's 4th district in the United States House of Representatives since 2023, offering a firsthand look at the pace, travel, and daily demands of congressional life.

States have generally redrawn districts only once per decade following the census, with mid-decade redistricting occurring infrequently and usually prompted by court orders or unusual political circumstances.

Studies of the 2020 redistricting cycle show that map-drawing strategies locked in predictable outcomes. The result was fewer competitive races, more incumbents shielded from challengers, and representatives less responsive to broader voter preferences.

John Dingell Jr. served 59 years in the United States House of Representatives, representing his Michigan constituents. This list highlights the 33 House members in US history who have served 40 years or longer.

The red–blue color scheme used on election night maps emerged in the 20th century as television networks adopted color graphics to make results easier to follow. The association of red with Republicans and blue with Democrats later became standardized.

This article breaks down demographic data to show what it means for American elections. According to the latest US Census, the US is growing increasingly diverse. As the population becomes more diverse, so does the electorate.

Since 1965, federal oversight has blocked thousands of state-level voting changes—including redistricting plans—by requiring approval for measures that could affect minority representation, a process scaled back by the Supreme Court in 2013.

In response to Republican mid-decade redistricting efforts, Democratic leaders in California, New York, Illinois, and Maryland signaled plans to revisit their own congressional maps.

A presidential candidate is declared the winner once they reach 270 of the Electoral College’s 538 votes. This interactive map from 270 to win shows how winning individual states shifts the path to victory on election night.

This overview explains how states receive electors equal to their senators and representatives, and details the legal framework governing how the Electoral College functions during presidential elections.

Analysts expect GOP-led states to net seats through mid-decade redistricting, while Democratic states face greater hurdles due to commissions and legal limits—tilting the likely outcome toward Republican gains in 2026.

This gallery offers a visual archive of the State of the Union, featuring photographs from each president's address, beginning with Franklin D. Roosevelt. Explore decades of presidential moments, settings, and historical context tied to the annual speech.

Pollsters track more than just politics: From civil rights to war declarations, go back and see how people felt about major events in the US with this timeline.

This dashboard from Virginia's health department provides a detailed look at various aspects of its emergency care services from January 2019 to December 2024, when there were more than 575,000 emergency incidents. More than 40% of its emergency services were devoted to slips and falls.

Need a visual on how prevalent slavery was in the US? Scroll through this interactive map and timeline based on census data from 1790 to 1860.

Computational methods are convincing a number of judges that some state district maps are drawn illegally. Here's a simple overview of how it works.

Voter turnout reached 66% in 2020—the highest since 1908—and 64% in 2024, tied for second-highest with 1960. In 2024, Trump benefited from higher turnout among his prior voters and new voters.

Thirty-six states are holding gubernatorial races this November. Here's a breakdown of which states are holding elections, who is running, and which way the race is leaning.

In several states, citizen or bipartisan panels draw congressional and legislative districts based on neutral criteria like population and geography. Learn more about how these commissions increase competitiveness in elections.

In the second half of the 19th century, researchers studying the behavior of the millions of emancipated Americans after the Civil War used "information graphics" to cut through the noise of racially charged debate. In this collection from Stanford, you can see century-old, stunningly hand-drawn data visualizations showing racial demographics, the effects of emancipation on cotton prices, and more.

Colonial Williamsburg's timeline situates the act within the local political culture of Virginia: colonists accustomed to taxing themselves through their own representatives in Williamsburg's House of Burgesses were outraged that Parliament could reach into their pockets from across the ocean. The timeline also covers Patrick Henry's proposed "Resolves," which prompted shouts of "treason" from his co-legislators, as well as commemorative objects (buttons, teapots) that followed the repeal.

In a contingent election, the United States House of Representatives is constitutionally required to choose the president, with each state delegation casting one vote when no candidate secures a majority of the electoral votes.

QuickFacts provides statistics for all states and counties, and for cities and towns with a population of 5,000 or more, collected through the US census. Interactive tables, maps, and charts synthesize census data. A drop-down menu allows users to...