Voting by mail in the US

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.

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.

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.

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.

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...

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%.

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.

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.

Each state’s Electoral College votes mirror its representation in Congress

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.

How credit scoring works outside the US

If you move outside the US, you won’t get to take your credit score with you. Credit scoring systems work differently in other countries. In the UK, for instance, being registered to vote improves your credit score.

The coolest ghost towns in every US state

Trying to avoid crowds? This list from Thrillist compiles various ghost towns across the United States, highlighting their unique characteristics and explaining why they were abandoned. Peruse this comprehensive list to learn more about why people left these areas and what's still there. If you're looking for additional creepiness, explore and find out which of these spots are particularly haunted!

Ranked-choice voting redistributes ballots until a candidate wins a majority

In ranked-choice voting, voters rank candidates in order of preference. If no one wins a majority, the lowest-ranked candidate is eliminated, and their votes are reassigned until a candidate surpasses 50%, avoiding separate runoff elections.

In 41 states, older Americans can opt out of jury duty, but not in federal court

As of 2024, 41 states offer age-based exemptions from state jury duty, with opt-out ages ranging from 65 in Mississippi and South Carolina to 80 in five states. None of these exemptions applies to federal court.

The United States is one of only around two dozen countries with a fully federal system of government, in which power is divided between national and state governments.

'Vacation' wasn't common for Americans until the mid-1800s

Although we now consider vacation to be an integral part of the summer season, the concept didn't exist in the US until the middle of the 19th century. Even then, it was still a luxury and didn't become a middle-class norm until the early 20th century.

Multiple legal pathways exist for immigrating to the United States

This comprehensive guide outlines various routes to US immigration, including family-sponsored and employment-based visas, as well as humanitarian protections. Navigate the complex American immigration system and understand the options available to prospective immigrants seeking legal entry.

In the US, you must actively sign up to donate your organs

The US has an opt-in donation system for organ donation—meaning people must provide consent to proceed with any donation. Locations including Spain, the United Kingdom, and Argentina have an opt-out donation system, which means individuals are presumed to be donors unless they actively refuse consent.

Poverty rates by US state

As of 2022, 37.9 million people in the US were living in poverty. But those people aren't evenly distributed among the 50 states. Some states and regions of the country are more impoverished than others. For instance, US poverty rates are relatively higher in the South than they are in the North. See the state-by-state breakdown with this map.

Where the US’s plastic recycling is discarded

The US ships over a million tons of plastic waste overseas each year. A short video explainer from USA Today shows a breakdown of what really happens to America's recyclables.

Federal systems are a minority among the United Nations' 193 members

Of the United Nations' 193 member countries, roughly two dozen use a federal system, dividing power constitutionally between national and subnational governments. This group includes the United States, India, Canada, Germany, and more. The video walks through examples of how these states operate.

How US currency is issued

Cash in the US is the result of a collaborative process between the Federal Reserve, the Treasury Department, regional banks, and a little-known agency called the Bureau of Engraving and Printing. From design to issuance, learn the steps in currency production in the US with this smart, aesthetic interactive.

Birthright citizenship grants citizenship to those born on a country's soil

The United States grants citizenship to individuals born in its territory—excluding the children of foreign diplomats and those born in American Samoa—regardless of their parents' citizenship status. This principle—known as jus soli—was established in the 14th Amendment, ratified in 1868.

The long-lost art of coded postage stamps

In the 1800s, the postcard was a relatively new phenomenon, as was the post office. In the burgeoning system, recipients of mail had to sometimes pay prohibitively costly fees to receive it. So to get around the fees, a system of placing stamps on the envelopes in specific ways to communicate—a simple yes or no—was devised by clever mailers and expanded and codified by postcard companies into guides. Learn about the fascinating system here.

The history of Mother's Day in the US

Mother’s Day is a holiday honoring motherhood that is observed in different forms throughout the world. Learn about the origins of the official holiday in the US with this in-depth breakdown of the holiday, from the 19th-century women's movement to the commercialization of Mother's Day sales.

IVF is legal across America, but some worry that state bans could curtail this reproductive technology

This reproductive technology is available across the US, but if states take action to prohibit the discarding of unused embryos or pass related legislation, it could affect access to IVF. Laws prohibiting IVF or effectively outlawing the procedure by defining personhood as being conferred at the moment of conception have been under discussion in several states in recent years, including Ohio, Virginia, and Texas.

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.

Thomas Jefferson delivered his 1801 State of the Union address in writing

In 1801, President Jefferson ended in-person State of the Union addresses, feeling they were too monarchial, and sent written messages instead—a practice that lasted until 1913. His first message was written and sent via his secretary, Meriwether Lewis, who later led the Lewis and Clark expedition.

Explore fun facts from the USPS, including unique post office buildings, a stamp that traveled past Pluto, and more.

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.

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

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.

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.

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

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

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.

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.

The original copy of the Declaration of Independence is not a pristine document, and even features a smudged anonymous handprint in the bottom left corner.

The US first hosted the World Cup in 1994, a tournament that lives in soccer infamy for its poor planning and the murder of Colombian player Andres Escobar, who'd accidentally scored on his own net.

Most of the observable universe's volume consists of voids and supervoids—enormous regions of space with little to no galaxies, stars, or light.

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

In 2009, the nation was gripped by the story of a missing young boy who was believed to be floating over Colorado in a homemade balloon, until it was revealed that he was at home the whole time.

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

Researchers believe the brain consolidates memories, processes emotions, and plans for the future during dream states

This poison ivy knowledge quiz—accompanied by photos of the plant's varied forms—may help you identify this common rash-inducing growth.

'Shogun,' a 1980s TV series, helped popularize sushi in the US by stimulating an American interest in Japanese culture.

Radioactive elements can introduce software errors because the ionizing radiation they produce can detach electrons from atoms, and computer code relies on the distribution of electrons.

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

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

Watch contemporary footage covering the US-backed Shah of Iran fleeing the country in the face of the 1979 Iranian Revolution