Mail-in voting has been used in US elections since the Civil War

Voting in the US has shifted from days-long journeys to modern, secure ballots

In the early 1800s, voting was limited and arduous, often requiring long travel and in-person balloting. This illustrated resource traces how voting technology evolved to expand access, speed elections, and improve security over time.

Voting by mail in the US

Voting by mail, also known as “absentee” voting, exists in every US state in various forms. Use Reuters’ graphic to understand voting by mail in the US. The practice of voting by mail dates back to the US Civil War when lawmakers wanted to...

The wildest cases of election fraud in US history

The USA has seen some crazy elections. Election fraud is vanishingly rare now, but here are the craziest cases of election fraud in U.S. history.

Election 101 podcast

What’s actually at stake when someone casts their vote in a US election? CNN’s “Election 101” podcast series provides ten episodes summarizing some of the basics of democratic elections. The ins and outs of voting are highlighted in 15-minute episodes on voter registration and voting by mail. Additional segments highlight how the electoral system works, how ballots are counted, the Electoral College, why it takes so long to get election results, and more.

The 2020 and 2024 elections ranked among the highest-turnout contests in over a century

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.

How political campaigns use your data

What do campaigns know about US voters, and how do they use that information to shape their strategies during elections? US political campaigns base their strategies and tactics on data collected from more than 200 million voting-age Americans. This visualization by Reuters breaks down how data firms create national databases of voter files, collecting information from a variety of sources to create detailed voter profiles and how political campaigns use that data.

Nate Silver argues the Electoral College can reduce the impact of excess votes

In this article, Silver weighs the Electoral College's flaws—especially popular-vote inversions—against its advantages, arguing it can limit the effect of surplus votes in heavily one-sided states and encourage broader competition.

The Voting Rights Act expanded the DOJ's power to enforce voting protections

The Voting Rights Act of 1965 expanded the Department of Justice's power to challenge discriminatory election laws, send federal examiners, and supervise voting changes in areas with histories of voter suppression—although some of these powers have been limited by court rulings since then.

US marshals conducted the national census for nearly a century

From 1790 to 1870, US marshals handled the national census, gathering population data from every district. The responsibility was gradually transferred to a separate federal office that would officially become the Census Bureau in 1902.

In 1882, American Express began offering money orders to compete with the US Postal Service

Money orders were American Express' first move into financial services. USPS launched its money order service in 1864 as a way for Civil War soldiers to send money back home. Between the 1880s and 1920s, immigration into the United States surged;the American Express money order service gave immigrants a way to send money to family members living in other countries.

Personal computers became more common in the late 1970s, making working from home more viable

As the internet and email became more popular in the 1990s, more infrastructure that would eventually support remote work was created. But the practice was still relatively uncommon until the COVID-19 pandemic, when white-collar workers first took to working from home en masse.

Hundreds of thousands of children still write handwritten letters to Santa

Children have been writing letters to Santa Claus for centuries, but in the early 1900s, Santa started writing back. That’s when the United States Postal Service began Operation Santa, allowing its employees to help answer St. Nick's mail. In 2017, the USPS started accepting digital letters to Santa.

How George Gallup changed political polling forever

Straw polls had been used in the 19th century, but it wasn't until George Gallup's use of random sampling in 1936 that the art became a science.

Why there are microchips in credit cards

Credit cards have evolved significantly since their invention in 1950, but security lagged in the US for years. Despite handling only a quarter of global transactions, the US once accounted for half of all credit card fraud. The 2013 Target data breach helped push the adoption of chip cards, reducing fraud but shifting risks to online scams.

Federal juries are selected from voter rolls and driver's license lists

Courts randomly draw prospective jurors from these sources, then mail qualification questionnaires. Those who qualify may be summoned for voir dire, where judges and attorneys question candidates before seating a final jury.

An estimated 91% of all Americans had used a coupon at least once as of 2022

Coupon use accelerated during the Great Depression, when the US unemployment rate reached nearly 25 percent. While coupons were invented in the late 1800s, they became more popular during the Depression as a way to stretch household budgets during the era’s economic hardships. Companies soon began distributing coupons via newspapers and women’s magazines.

The US officially adopted an income tax in 1913

The US first levied income taxes during the Civil War, but modern income taxes became an American fixture in 1913. Two years earlier, Congress passed the 16th Amendment to give the government the right to tax individuals' and businesses' income. The US still technically levies the same federal income tax now as it did then—though it's evolved.

New England towns have practiced direct democracy since the 1700s

Town meetings in New England let residents vote directly on local budgets, laws, and policies. One of the oldest surviving forms of participatory democracy in the United States, the tradition dates back nearly 250 years.

Hear about the 250-year history of the United States Postal Service, complete with some of its strangest deliveries, important innovations, and the figures that made it an American institution.

Congress has handled past crises through emergency lawmaking and institutional expansion

In a 2020 podcast from the National Constitution Center, historians and political scientists examine how Congress navigated past national crises—particularly the Civil War—and what those moments reveal about governing today.

Woodrow Wilson revived the in-person State of the Union in 1913

President Wilson became the first president since John Adams to deliver the State of the Union in person. He is credited with transforming the speech from a routine update into a public tool for advancing the president's legislative agenda.

How the US first installed an electronic fence along the southern border

The US Border Patrol's first automated surveillance system launched in 1970 with 177 ground sensors installed along a single section in California. The sensors had already been used in Vietnam, along the so-called McNamara Line, and were connected by radio transmitters to magnetic-tape computers. They were implemented to target people defined by law and deportable aliens.

19th-century Americans used technology to try to prove the existence of ghosts

In the 19th century, following technological advancements like the telegraph, phonograph, and others, efforts were made to capture proof of ghosts. These technologies seemed supernatural in their own right and emerged at the same time Spiritualism took off in the US, resulting in new approaches to connecting with the dead.

Long before Major League Baseball began allowing instant replay for balls and strikes, an umpire reluctantly used the technology to determine whether a hit was a home run, a move that inadvertently ushered in a new era for the sport.

See checks signed by US presidents

One bank has made it a point to conserve checks from US presidents. Peruse this gallery of signed checks from Washington, FDR, JFK, Lincoln, and more.

During the COVID-19 pandemic, many private schools offered in-person classes

By early 2021, approximately 76% of private schools offered some form of in-person learning compared with 38% of public schools.

A 1954 outbreak at a Boston boarding school allowed scientists to isolate the measles virus

While measles was described as early as the 9th century, humanity lacked the medical technology to fight the disease until the mid-20th century. Vaccine development from the Boston outbreak in the 1960s and 1970s led to one of the most effective inoculation campaigns in history.

The US Constitution is widely regarded as the longest-standing written national constitution still in force—see how it has influenced rights worldwide.

Gerrymandering works through two techniques: cracking opposing voters across districts to dilute their power, and packing them into a few to waste their votes in lopsided majorities.

Despite being favored by 87% of Americans, Congress does not have term limits.

While the first exchange-traded fund (a 'basket' of different assets that can be bought and sold on a stock exchange) in the US only launched in 1993, the global ETF market has grown to more than $10T in the short time since.

Experimental hantavirus vaccines and therapies, still under development, have long been funded by the US military.

At the beginning of the 20th century, a group of young men ate standard American food—replete with food additives like borax and formaldehyde—as part of government research to better understand food safety.

The use of fungi to detoxify land and water—a process known as mycoremediation—has been used to clean up natural resources affected by the 2025 California wildfires.

20,000 letters to the advice columnist 'Dear Abby' provide insight into prevailing sex, religion, and LGBTQ fears, anxieties, and concerns from the 1950s onward.

US consumers collectively owe more than $1T to credit card companies—almost as much as they owe in auto loans.

Telehealth demand for GLP-1s for weight loss is booming as consumers seek easier access.

Memecoins are a type of cryptocurrency—a form of digital currency with a wide variety of uses—created around popular 'memes,' or viral internet jokes.

The American Society of Civil Engineers' infrastructure report card gave the US a C in 2025, its highest grade since the project launched in 1998.

Tattoos remain visible on your skin thanks to immune cells called macrophages

After the Boston Tea Party, colonists switched to coffee, which became the main morning drink for revolutionaries.

In its famous catalog, Sears sold $600 DIY house kits from 1908 through the 1940s, resulting in an estimated 100,000 'Sears and Roebuck homes.'

Astronauts have repaired genetic damage in space using CRISPR—a molecular tool that can make precise changes to DNA and is used in single-celled organisms to attack invasive viruses.

Abraham Lincoln was almost assassinated weeks before his inauguration as he traveled from Illinois to DC through Baltimore in 1861; it took two independent claims for Lincoln to be convinced the threat was real

'Silent' fireworks have gained more interest in recent years as a quieter celebratory option.

The first horror movie is believed to be George Méliès' 1986 short 'The Haunted Castle,' which pioneered the use of special effects

Graffiti dates back to at least ancient Pompeii, where citizens scrawled messages to one another on public walls

English mathematician Ada Lovelace wrote the first computer algorithm a century before computers existed and hypothesized that computing devices would one day be able to compose music—foreseeing the generative AI systems of today.

The Russia-Ukraine conflict is the largest ground war in Europe since World War II in casualties, forces mobilized, and displacement of civilians.