WASHINGTON (AP) — Americans will cast roughly 160 million ballots by the time Election Day comes to a close — in several different ways, including many submitted a few weeks before polls even open.

They will choose a president, members of Congress and thousands of state lawmakers, city council members, attorneys general, secretaries of state — and in Texas, a who has nothing to do with the trains.

This year’s election also comes at a moment in the nation’s history when the very basics of how America votes are being challenged as never before by disinformation and distrust.

It can be tough to make sense of it all. To help better understand the way and its leaders — all the way down the ballot — offers the following thoughts on the about Election Day. A guidebook, of sorts, to American democracy as it nears its 250th birthday.

No. 1: People: Donald Trump & Kamala Harris

It's said that every presidential election makes history. Perhaps. But while some are destined to be included in the history books, others become the subject of books all of their own. Put 2024 down to get a whole shelf at the library. Will Americans choose to return to the White House, electing a former president to a new term for only the second time — and picking for the first time a person convicted of a felony to sit behind the Resolute Desk? Or will voters decide ought to be the nation's first woman to take up office in the Oval Office, a candidate who didn't win a single primary yet landed at the top of her party's ticket by acclamation. No list of the Top 25 things to know about this year's general election can begin without an acknowledgment that no matter who America chooses, Trump and Harris will make history this Election Day. (Or a few days later.)

No. 2: People: Elon Musk

There might not be anyone as all-in on returning Trump to the White House as , the world’s richest person. “President Trump must win to preserve the Constitution. He must win to preserve democracy in America,” the founder of SpaceX and Tesla in early October when Trump of his first attempted assassination in Pennsylvania. Along with his unfathomable personal wealth, Musk’s ownership of X, formally known as Twitter, gives him an unprecedented ability to try and convince voters of his belief that electing Trump is a “must-win situation.” Musk is spending heavily on get-out-the-vote efforts and using his perch as X’s CEO to and push into millions of timelines his argument that the country will not survive should Kamala Harris win the White House. It’s a foreboding message that seems to get bleaker by the day – and Musk knows it. “As you can see, I am not just MAGA,” from the rally stage. “I am Dark MAGA.”

No. 3: People: Jotaka Eaddy

The founder of , Jotaka Eaddy has for the past four years hosted Sunday evening video conferences on Zoom to chat politics. On July 21, she couldn’t get into her own meeting. Earlier that day, dropped out of the presidential race and endorsed Kamala Harris as his replacement to be the Democratic nominee, and once Zoom changed some settings, 44,000 people were online and ready to talk about it. It was a pep talk and a telethon. People prayed and sang. About an hour after the Zoom started, Star Jones shared a donation link and by early the next morning they had raised more than $1 million. The meeting spawned a domino effect as Eaddy turned a tool made essential by the coronavirus pandemic into an essential place for Harris' supporters to gather. Soon, Black men and white women and white dudes and fans were logging on. “It has allowed us to organize in a way to bring people together that otherwise would not connect,” Eaddy said.

No. 4: People: Garrett Archer

Now that how a ballot is cast is as much of a red/blue choice as the candidate getting the vote, figuring out who will win a close election often depends on knowing the left to be counted. Garrett Archer, a former analyst at the Arizona Secretary of State’s office who is now a data journalist, was one of the first of Twitter’s election seers to understand how nit-picky those details can be. Were the advance votes still to be counted cast in person, mailed or left at a drop box? How soon before Election Day did those mail ballots arrive? Or might those mail votes actually be “late earlies” dropped off at a polling place? Archer goes deep into those details in his job with ABC’s Phoenix affiliate, but most of us will get his analysis of Arizona’s election results online, as we wait every afternoon after Election Day for his that begins: “Maricopa incoming...”

No. 5: People: Shenna Bellows

About a week after Election Day, Maine Secretary of State is likely to star in a via laptop webcam to announce results of . The instant-runoff system, used when no candidate initially wins an outright majority, might be a downballot novelty if not for the state’s 2nd Congressional District. Behind by about 2,000 votes in 2018, emerged the winner and ousted the GOP incumbent once the awarded him the votes of two trailing independents. Maine also awards two of its Electoral College votes by congressional district, and while it may be unlikely, the road to 270 electoral votes could theoretically end with ranked choice results in Maine’s 2nd District. In that case, should Golden’s come-from-behind win of , it would fall to Bellows to announce that had put a second-place finisher into the White House.

No. 6: Places: Adak, Alaska

On an Aleutian island closer to the Russian border than mainland Alaska and more than 4,000 miles from the White House, the question isn’t who wins on Election Day. It’s who will be the very last American to vote. “People have a little bit of fun on that day, because, I mean, realistically everybody knows the election’s decided way before we’re closed,” said Layton Lockett, the city manager in . The country’s last polling place to close is the only one still open from midnight ET to 1 a.m., when things wrap up on the island and former World War II military base. The honor of being the last voter was Mary Nelson’s in 2012, when the community of a few hundred people did away with early voting in favor of casting ballots in person. She was a poll worker that Election Day, too, meaning her historic moment was short-lived. “When I opened the curtain to come back out, the city manager took my picture … and they were waiting for us in to call with our vote count,” she said.

No. 7: Places: Nash County, North Carolina

Out of more than in this year’s election, only 10 voted for Trump in 2016 before flipping to Biden in 2020. The first to complete its count this Election Day ought to be North Carolina’s , which by 10 p.m. ET could provide an early indication of which candidate is performing best among the swing voters likely to decide a closely contested White House. That’s especially true should there be a decisive winner in the community northeast of Raleigh, unaffected by . Two decades have passed since any presidential candidate won Nash by more than a point. Confirmation won’t come for hours (or days), but more intelligence will arrive about a half hour later when North Carolina’s other Trump-Biden county — New Hanover on the state’s Atlantic Coast — should wrap up its count. The other eight counties to watch: Erie and Northhampton in Pennsylvania; Maricopa in Arizona; Kent, Saginaw and Leelanau in Michigan and Sauk and Door in Wisconsin.

No. 8: Places: Apache County, Arizona

There’s more to Arizona than Maricopa County. Seriously! Yes, it’s true that Biden eked out a win in 2020 among the more than 60% of Arizona voters who live in the sprawling home of Phoenix and its suburbs. But Biden may not have won Arizona and its 11 electoral votes without his win in Apache County, where he beat Trump by 11,851 votes out of roughly 35,000 cast. His statewide margin? Just 10,457. is far from the typical Democratic urban stronghold. Much of the rural county is part of the Navajo Nation, and it also includes lands belonging to the Apache people who gave the county its name. In all, more than 70% of people living there are Native American. America’s indigenous population is often overlooked in presidential elections: the states with the largest percentages of Native people – Alaska, New Mexico, Oklahoma and South Dakota – are not often competitive. Arizona’s emergence as a battleground makes the voters in Apache County — and the roughly 5% of Arizonans who are Native American — a potential factor in this year’s election.

No. 9: Places: Milwaukee, Wisconsin

Trump won Wisconsin by about 20,000 votes in 2016 – and he and the country had to wait on Milwaukee County to know which way that margin would fall. The state’s largest county and Democratic stronghold is one of a handful in Wisconsin that releases results of mail ballots all at once, rather than combining them with other ballots counted at precinct polling places. In 2016, confirmation there weren't enough mail votes left to count in the City of Milwaukee to flip the race from Trump to allowed AP to declare the Republican the winner of the state – and the White House. In the 2022 midterms, it was only when AP confirmed there were no ballots remaining to be counted in Milwaukee and Dane County, Wisconsin’s other largest source of Democratic votes, that it was able to say incumbent Republican would return to the Senate. Milwaukee might not be among the final counties in Wisconsin to report its results this year, but don’t count out its chances to be the decisive county once it does in this crucial battleground state.

No: 10: Places: Drop boxes

Election officials nationwide found no cases of fraud, vandalism or theft related to the use of drop boxes that that could have . And yet no place in this year’s election may face more scrutiny than the drop box – a tool designed to make voting easier that’s become the source of conspiracy theories that they played a role ( ) in stealing the election from Trump ( ). Several states have enacted laws restricting their use since 2020, while in others they remain the subject of fascination. The Wisconsin Supreme Court reversed itself in July and dumped a ruling that limited drop boxes to only election clerks’ offices. Prosecutors are currently investigating the last month by the mayor without consulting with the city clerk. Election officials typically have detailed processes to ensure the security of ballots left in drop boxes, which are often monitored remotely by camera. Still, drop boxes remain a place where opponents wrongly believe their vote is neither safe nor secure.

No. 11: Races: Pennsylvania president

There are 538 electoral votes to win from the 50 states and the District of Columbia, but the Trump and Harris campaigns are seriously contesting only seven states this year as battlegrounds: Arizona and Nevada out West, North Carolina and Georgia in the South, Michigan and Wisconsin amid the Great Lakes and Pennsylvania as the final boss. Eight years ago, Pennsylvania was the last state called for Trump before he won the election by winning in Wisconsin in the early morning hours after Election Day. Four years ago, Biden's win there four days after polls closed — by roughly 80,000 votes out of more than 6.8 million cast — was the difference. Both presidential hopefuls can get to the 270 electoral votes needed to win the White House without the Keystone State, but their path to 1600 Pennsylvania Avenue gets a whole lot easier if they grab Pennsylvania's 19 electoral votes along the way.

No: 12: Races: Abortion ballot measures

Supporters of abortion rights are 7-for-7 in statewide votes since the U.S. Supreme Court “ ” the ability to decide on the legality of abortion. Come Election Day, will get the chance via ballot measure to do the same. The states range from the reliably blue (Colorado, Maryland) to the resolutely red (South Dakota, Missouri, ), with a few presidential battlegrounds and/or states with key races for U.S. Senate – Arizona, Nevada and Montana – in between. And then there’s , a state Hillary Clinton hoped would provide her with a powerful push into the White House. Instead, the Sunshine State was in 2016 (and again in 2020) a cornerstone of Trump’s Electoral College count. A Trump loss in Florida would undoubtedly sink his bid to return to the White House, but it’s hardly clear that the chance to vote on social issues – – can sway enough voters to truly affect an outcome at the top of the ticket.

No. 13: Races: New York’s 19th Congressional District

Republicans can likely hold the U.S. House of Representatives even if they lose a couple of seats in New York, where a messy process two years ago helped the GOP win six . But if those losses include freshman Rep. Marc Molinaro in the state’s 19th District, it will make for an uncomfortable election night for House Speaker Mike Johnson. Molinaro has styled himself as a pragmatist as he seeks reelection for the first time, avoiding the circus of former GOP Rep. George Santos in New York’s 3rd District – a seat his party has already lost – and the of rising party star and 17th District Rep. Mike Lawler. Democrat Josh Riley, who nearly won the district in 2022, has raised more money than Molinaro ahead of their November rematch, as Democrats run candidates nationwide who came up just short in the 2022 midterms. If that’s a winning strategy in New York’s 19th District and elsewhere, the celebrations might be the most raucous in Brooklyn at the election night party of New York 8th District Rep. Hakeem Jefferies: the Democratic leader and House Speaker-in-waiting.

No. 14: Races: Texas Senate (and Florida, too!)

Pay enough attention to politics and you’ll have heard the bit about Democrats being one election away from winning in . Then Election Day arrives and Republicans have the cattle while Democrats are once again holding their hat. Is this the year that changes? Democrats say they’re into the state with the hope that an unpopular incumbent (Sen. Ted Cruz) is at risk to a rising star (former NFL player and current Rep. Colin Allred). Sound familiar? Six years ago, Cruz was an unpopular incumbent running against a rising Democratic star from the U.S. House named Beto O’Rourke. Some say O’Rourke ran the perfect campaign…and . It’s been 30 years since a Democrat won statewide in Texas, so maybe the odds are better for Democrats in ? They’re spending money there, too, to try and take down incumbent Sen. Rick Scott. Ask the GOP what to make of and they’ll tell you to keep control of the Senate.

No. 15: Races: California’s 13th Congressional District

might be in one of the closest races of the cycle – and possibly faces the longest waiting time to find out if he’s returning to Congress. The California Republican won his 2022 race by 564 votes in a race that was so close that the AP needed until the first week of December to declare Duarte the winner. Now he has to do it all again: He faces a rematch in the state’s 13th Congressional District against former state Assemblyman . California’s count in large part because the state conducts its elections entirely by mail. In the 13th, there are also no major cities – no L.A., no Bakersfield, not even Fresno – that would provide enough votes at the beginning of the night to make clear who has won. If the House majority comes down to Duarte’s race, the nation’s attention will focus on a long count in five counties of California’s agricultural Central Valley.

No. 16: Dates: Nov. 5, 2024

The first Tuesday after the first Monday in November is Election Day, established in 1875 under 2 U.S. Code § 7 “in each of the States and Territories of the United States, of Representatives and Delegates to the Congress.” In modern U.S. elections, Election Day is perhaps best thought of as the LAST day of the general election: it's the final chance for voters to cast ballots in person, for mail ballots to arrive and be counted, or, in some states, the day by which mail ballots must be postmarked.

No. 17: Dates: Nov. 25, 2024

Three weeks later comes the last day a mail ballot can arrive in and still be counted — Nov. 25 is the latest deadline for any state that accepts to arrive with an Election Day postmark. In all, 17 states and the District of Columbia allow mail ballots to arrive after Election Day, while 32 others require they be in the ballot box on Election Day. Only Louisiana requires mail ballots to arrive early in order to be counted — the deadline there for mail ballots is the day before Election Day.

No. 18: Dates: Dec. 11, 2024

After supporters of Trump stormed the Capitol on Jan. 6, 2021, in an insurrection that aimed to overturn his loss to then-President-elect Joe Biden, Congress updated the Electoral Count Act to, among other things, establish the date by which every state's governor must of the presidential election and submit their slate of electors. Any should then be completed by Dec. 16, because those members of the will vote the next day.

No. 19: Dates: Dec. 17, 2024

Wait, there's another election day? Indeed! The Constitution says it’s not the people who pick a president, but rather a group of “electors” as selected by each state for the job. But the founders also wrote that states get to decide how to pick their members of the , and almost all require they vote for the winner of their state's popular vote (Maine and Nebraska do it just a little differently). This ritual takes place about a week before Christmas, the deadline for the electors' cast ballots to arrive in Washington.

No. 20: Dates: Jan. 6, 2025

More ceremony in early January as the members of the 119th Congress, having taken office a few days earlier, count those ballots under the rules of the updated Electoral Count Act. Objections are still possible, but much harder to raise, and the revised law makes plain the vice president is there only to announce the results as president of the Senate. Once the electoral votes are officially cast and counted, the final step of the election comes at the new president’s inauguration on Jan. 20, 2025.

No. 21: Things to Know: Paper ballots

Almost all of the roughly 160 million ballots that will be cast in this year’s election will be made of paper. And almost all will be . Election officials say without such machines, counting those ballots by hand would take much longer, cost taxpayers far more and result in errors that would then take even more time and money to fix. “Human beings are really bad at tedious things, and counting ballots is among the most tedious things we could do,” said Massachusetts Institute of Technology professor Charles Stewart. “Computers are very good at tedious things. They can count very quickly and very accurately.” Still, the desire to have lingers. Officials in over a recent directive from the state's election board requiring poll workers to count the total number of ballots by hand.

No. 22: Things to Know: ‘Too close to call’

At The Associated Press, a race is “too early to call” if election officials are still tabulating votes and there is no clear winner. Regardless of how tight the margin may be between the leading candidates, AP won’t say a race is “too close to call” unless election officials have tallied all outstanding ballots — save for provisional ballots and late-arriving mail and absentee votes — and the winner still remains unclear. In those cases, it's likely AP won’t be able to say until election officials — a process that may take up to several weeks after Election Day. By the way, elections headed to a recount aren’t automatically “too close to call.” In fact, depending on how many votes separate the trailing candidates from the leader, AP may declare a winner even if a recount is possible.

No. 23: Things to Know: Recounts

Here’s the thing about recounts: They might be required by law, they might be requested by a candidate, they might be ordered by a court. But they’re but drag out the inevitable. “Recounts are shifting a very small number of votes,” said Deb Otis of the nonpartisan organization Fair Vote. “We’re going to see recounts in 2024 that are not going to change the outcome.” They almost never do. In the 36 recounts of a statewide general election since America’s most famous recount in 2000, none moved the margin by more than a few hundred votes. The average change? Just 0.03 percentage points. The biggest? A move of 0.11 points in the 2006 race for Vermont state auditor – a rare race that did flip as a 137-vote lead in the initial count for Republican Randy Brock became a 102-vote recount by Democrat Thomas Salmon. “The count is pretty accurate because the machines work,” said former Arizona election official Tammy Patrick. “We have recounts … to make sure we got it right.” As hopeful trailing candidates will soon learn, the first count almost always is.

No. 24: Things to Know: Estimated vote

Looking for “precincts reporting” when watching as results are reported in this year’s election? Chances are, you’ll find an estimate of “ ” instead. The Associated Press and other news organizations have moved away from precincts reporting as a measure of election turnout for several reasons – the fact that well at a neighborhood “precinct” on Election Day chief among them. Instead, AP will estimate how much of the vote election officials have counted – and how many ballots they have left to count – based on a number of data points, including details on advance ballots cast, registration statistics and turnout in recent elections. Those estimates will change as votes are counted and more information about the exact number of ballots cast becomes available. AP’s estimates of ballots cast won’t reach 100% until as final and complete.

No. 25:

Things to Know: When we’ll know

More often than not, in a nation as evenly divided as the United States, not on Election Day — or, at the least, not on Election Day on the East Coast. Since it took 36 days for George W. Bush's win in the 2000 presidential race to play out in and before the Supreme Court, only in Barack Obama's two victories has AP before midnight Eastern Time. Trump didn't win until 2:29 a.m. ET in 2016 and he didn't lose in 2020 until the Saturday morning after Election Day — that's how long it took for Biden to claim 270 electoral votes by emerging as the clear winner in Pennsylvania. Meanwhile, the sheer number of U.S. Representatives from California — — could make for a long wait to know which party will control the House. The election for Speaker? .

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The AP Elections Top 25 was reported by Leah Askarinam, Christina A. Cassidy, Christine Fernando, Meg Kinnard, Chris Megerian, Geoff Mulvihill, Stephen Ohlemacher, Emily Swanson, Mark Thiessen and Robert Yoon.

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Read more about how U.S. elections work at , a series from The Associated Press aimed at helping make sense of the American democracy. The AP receives support from several private foundations to enhance its explanatory coverage of elections and democracy. See more about AP’s democracy initiative . The AP is solely responsible for all content.

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