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

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

Americans have cast mail-in ballots for more than a century, but COVID-19 greatly expanded their use. Modern systems track ballots and often require signature verification, increasing access while maintaining election security.

How Americans have voted throughout history

From shouting candidates’ names, to hanging chads to electronic scanning, the nature of voting has a long, sometimes bumpy history in the United States. See descriptions and images in chronological order with this digestible timeline.

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...

Voting rights expanded from 6% of Americans in 1789 to nearly all adult citizens today

In the first US election, only white male property owners—about 6% of the population—could vote. Constitutional amendments culminating in the 26th Amendment gradually expanded voting rights to nearly all citizens aged 18 and older.

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 cost of maintaining aging voting systems

A joint analysis from the Brennan Center and Verified Voting finds that replacing aging voting equipment will cost hundreds of millions of dollars.

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.

The firms running America's voting systems

Three companies make up over 90% of the US market share around voting systems, and like any company, they're priorities aren't always aligned with the public's. Dive into the industry of voting machines in this investigation piece from the Guardian.

How demographics influence voter turnout and elections

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. Analyzing the...

Thousands of state voting changes have been federally blocked since the Voting Rights Act

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.

Voter turnout in local elections is significantly lower than for national elections

While 64% of eligible voters cast ballots in the 2024 presidential election, turnout in municipal elections is usually below 15%. For school board elections—where members oversee more than 50 million students and $600B in spending—turnout is often around 5%-10%.

Modern presidential primaries now span months before conventions formalize nominees

In 2020, the major parties selected nominees through 64 primary and caucus contests held over 22 days. Until the 1960s, most nominees were chosen by party leaders at conventions rather than through widespread primaries.

Critics say that the Electoral College is outdated and favors small states

This article argues that the Electoral College no longer reflects modern democratic norms, disproportionately advantages smaller states, and warrants broader reform and national debate. (Some readers may experience a paywall.)

Tracking where people moved in the US in 2022

The latest data from the US Postal Service's change of address request system shows a decline in migration in 2022. See where people are moving and where they are leaving with this data breakdown.

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.

Red and blue election maps are a modern media invention

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.

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.

Gambling funded America's early expansion

In the colonial era, lotteries were viewed as a voluntary tax to help fund infrastructure and capital projects. The idea came from Europe, which had used lotteries dating back to the 16th century. The image below is from a Massachusetts lottery in 1758.

The 1950s saw the rise of the modern American road trip

Guaranteed time off and the ability to travel more affordably offered Americans the opportunity to hit the road for their vacations. The country's expanding interstate network of highways made those trips more convenient, especially for those looking to visit a site in the country's nascent National Parks System.

Paper boarding passes have become rarer in recent years

Many travelers have shared their attachment to the documents as their utility fades. This sharply illustrated timeline reviews the development of the paper boarding pass as technology 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.

Throughout most of the 1800s, US currency was backed by silver and gold

In post-Civil War America, the government moved to use only the gold standard. This was how US currency was backed for decades in the US. You can read a comprehensive explainer on the gold standard and its history in the US to learn more.

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.

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.

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

Eurovision voting largely follows cultural blocs

In 2025, France's AFP analyzed the voting data from every Eurovision Song Contest and found that how countries vote often reflects long-standing cultural associations, with Nordic countries, Baltic states, and former Soviet nations tending to vote in solidarity.

As technology evolved, so did Wall Street

Before the telephone was invented in the mid 1800s, people had to trade stocks in person. But once office telephones and computers became commonplace, banks and other financial institutions didn't necessarily need to have their headquarters near exchanges like Wall Street's New York Stock Exchange.

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.

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.

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.

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

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.

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.

Stanford built a Google Maps for the Roman Empire, revealing how much it cost to travel in the ancient world

Discover the catastrophic consequences of a failure of the US electrical grid—something that is more likely than many Americans think.

The United States has had a tumultuous relationship with Cuba since its 1959 revolution, highlighted by a nuclear crisis and a decades-long trade embargo.

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

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

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.

44% of Americans say they pray at least once a day—discover how your state's religiosity stacks up against the rest of the country.

For centuries, it was common to sleep in two shifts: a few hours at the beginning of the night, and a longer period beginning around midnight

Some coin denominations have ridges etched on their sides, partly to prevent counterfeiting, in a practice called 'reeding.'

Dorothy's famous entrance into Oz in 'The Wizard of Oz' relied on analog tricks, including a body double and sepia-toned paint, as much as it did on technology

The 2026 Ebola outbreak is hampered by a lack of vaccine against the species of the virus, heightening the need for rapid tests to aid in disease control.

Before humans, the Soviet Union and the United States sent animals—including apes, dogs, and cats—to space during the Space Race.

US housing costs have risen by roughly 175% between 1991 and 2026—but a growing number of Gen Zers are becoming homeowners anyway. In 2025, 4% of homebuyers were Gen Z, up from 3% the year before.

Objects can be 3D printed with light by projecting 2D computerized tomography (CT) scans onto rotating cylinders of resin, which solidify upon exposure.

Watch how algorithms can be designed to train themselves and self-improve without human input, to the point where the optimized code is too complex for programmers to understand.

In preparation for this weekend's Eurovision finale, which is something like the World Cup of pop music, here's a young Céline Dion performing (for Switzerland?) at the 1988 competition.