Path to 270: The states Harris and Trump need to win

An image of the White House with a collage of photos from places in the seven swing states in the US which will decide the 2024 election.

A map showing the 50 states in the US and the political party that each of them votes for, image

There are 50 states in the US and most of them vote for the same party – Democratic or Republican - at every election.

A map showing the seven states considered to be battlegrounds in this election, image

A map showing the seven states considered to be battlegrounds in this election, image

That leaves just a handful of states where either candidate could win. At this election there are seven.

A visualisation showing the number of electoral college votes each candidate is expected to get from the states that usually vote the same way, image

A visualisation showing the number of electoral college votes each candidate is expected to get from the states that usually vote the same way, image

They are known as the swing states and can be divided into two groups: the Sun Belt and the Rust Belt.

A visualisation showing the number of electoral college votes each candidate is expected to get from the states that usually vote the same way, image

A visualisation showing the number of electoral college votes each candidate is expected to get from the states that usually vote the same way, image

In US elections, states with more people are worth more points. These points are called electoral college votes and for the swing states they range from six to 19.

A visualisation showing the number of electoral college votes each candidate is expected to get from the states that usually vote the same way, image

Across the entire US there are a total of 538 electoral college votes up for grabs and the winner will be the candidate that gets 270 or more.

In all but two states, the presidential candidate with the most individual votes from the residents there wins all the state’s electoral college votes.

If both candidates win all the states that history - and the polls - suggest are almost certain to vote for them, it will leave Kamala Harris 44 votes short of victory and Donald Trump looking for 51 more votes to become president.

The swing states hold 93 votes between them.

Graphic showing that Harris is expected to gain 226 electoral college votes from Democrat leaning states and Trump is expected to get 219 votes from Republican leaning states, leaving 93 votes in the swing states.

Both candidates will need to win at least three swing states to get them over the line.

There are many different swing state combinations that could take either past 270 - but some are more likely than others.

In the scenarios below, we look at how both candidates might get across the line - and what happens if neither of them does.

The three swing states of Pennsylvania, Michigan and Wisconsin are part of the Rust Belt – former heartland of the US manufacturing industry.

That industrial heritage means many voters in these states have traditionally been union members with a long history of voting for the Democrats – and the Democrats have taken all three states in seven of the last eight presidential elections.

Graphic showing that all three Rust Belt swing states voted for the Democratic candidate in 1992, 1996, 2000, 2004, 2008, 2012, all flipped to vote Republican in 2016, and then returned to Democratic the candidate in 2020.

When they did flip for Donald Trump in 2016, they all flipped together.

So history would suggest that one candidate will likely take all three states – and taken together they provide a sizable block of votes.

Graphic showing Wisconsin has 10 electoral college votes, Michigan 15, and Pennsylvnnia 19. Together these three Rust Belt states deliver a total of 44 electoral college votes.

If all the other states vote as expected, and Kamala Harris can win all three Rust Belt states, then she will win the election.

If Donald Trump swept up these three states again, he would still need to pick up at least one state elsewhere.

Graphic showing that winning all three Rust belt states would give Kamala Harris exactly 270 electoral college votes. In contrast, if Donald Trump won all three of these states he would still be seven votes short of victory.

For Harris the key to these states – as with many states across the country – is to pile up votes in and around the cities by ensuring that black, minority and college-educated voters turn out on election day along with middle-class voters in the suburbs – particularly white women.

Trump's strength in these states is the opposite. He won the 2016 election by amassing huge winning margins in the rural areas of these states – appealing to those voters outside the cities.

Trump is hoping he can find even more votes in rural areas this year and his campaign is focusing on persuading younger men who may have never voted before to get to the polls. If they turn out in large numbers, it could further bolster his white working-class vote in the Rust Belt.

HARRIS KEY STATE: Pennsylvania

Pennsylvania is the biggest prize of the 2024 swing states with 19 electoral votes.

If Kamala Harris can win Pennsylvania plus one more from this Rust Belt group, she leaves Donald Trump needing close to a clean sweep of all the other swing states.

With Pennsylvania, Harris could pass 270 by winning just three swing states overall. Nevada doesn't have enough electoral college votes for this scenario, but Pennsylvania and any other two would be enough.

A Pennsylvania election

This is Pennsylvania's presidential election. The other states just live in it. According to some projections, the candidate who wins Pennsylvania has upwards of a 90% chance of winning the White House. It's that important. Pennsylvania, in a way, is a microcosm of the United States. It has big cities dominated by Democrats and Republican-friendly rural areas. Its demographic makeup is similar to the country overall. It has new technology companies and old industries; energy extraction and agriculture. A candidate can't be a one-trick pony and win in Pennsylvania. It is the place that both campaigns have been investing the most time and resource. And polls almost universally show the state sitting on a knife's edge.

Byline image: Anthony Zurcher, BBC North America correspondent
Graphic showing that all three Rust Belt swing states voted for the Democratic candidate in 1992, 1996, 2000, 2004, 2008, 2012, all flipped to vote Republican in 2016, and then returned to Democratic the candidate in 2020.

The three swing states of Pennsylvania, Michigan and Wisconsin are part of the Rust Belt – former heartland of the US manufacturing industry.

That industrial heritage means many voters in these states have traditionally been union members with a long history of voting for the Democrats – and the Democrats have taken all three states in seven of the last eight presidential elections.

When they did flip for Donald Trump in 2016, they all flipped together.

Graphic showing Wisconsin has 10 electoral college votes, Michigan 15, and Pennsylvnnia 19. Together these three Rust Belt states deliver a total of 44 electoral college votes.

So history would suggest that one candidate will likely take all three states – and if that candidate is Kamala Harris, then she wins the election.

If Donald Trump swept up these three states again, he would still need to pick up at least one state elsewhere.

For Harris the key to these states – as with many states across the country – is to pile up votes in and around the cities by ensuring that black, minority and college-educated voters turn out on election day along with middle-class voters in the suburbs – particularly white women.

Graphic showing that winning all three Rust belt states would give Kamala Harris exactly 270 electoral college votes. In contrast, if Donald Trump won all three of these states he would still be seven votes short of victory.

Trump's strength in these states is the opposite. He won the 2016 election by amassing huge winning margins in the rural areas of these states – appealing to those voters outside the cities.

Trump is hoping he can find even more votes in rural areas this year and his campaign is focusing on persuading younger men who may have never voted before to get to the polls. If they turn out in large numbers, it could further bolster his white working-class vote in the Rust Belt.

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HARRIS KEY STATE: Pennsylvania

Pennsylvania is the biggest prize of the 2024 swing states with 19 electoral votes.

If Kamala Harris can win Pennsylvania plus one more from this Rust Belt group, she leaves Donald Trump needing close to a clean sweep of all the other swing states.

With Pennsylvania, Harris could pass 270 by winning just three swing states overall. Nevada doesn't have enough electoral college votes for this scenario, but Pennsylvania and any other two would be enough.

A Pennsylvania election

This is Pennsylvania's presidential election. The other states just live in it. According to some projections, the candidate who wins Pennsylvania has upwards of a 90% chance of winning the White House. It's that important. Pennsylvania, in a way, is a microcosm of the United States. It has big cities dominated by Democrats and Republican-friendly rural areas. Its demographic makeup is similar to the country overall. It has new technology companies and old industries; energy extraction and agriculture. A candidate can't be a one-trick pony and win in Pennsylvania. It is the place that both campaigns have been investing the most time and resource. And polls almost universally show the state sitting on a knife's edge.

Byline image: Anthony Zurcher, BBC North America correspondent

The states in the southern US are often referred to as the Sun Belt for the obvious reason that they have a hotter climate than those in the north.

There are four swing states in the south at this election: Arizona, Georgia, Nevada and North Carolina.

Between them they could deliver 49 electoral college votes to a candidate who won all four.

Graphic showing Nevada has 6 electoral college votes, Arizona 11, North Carolina 16 and Georgia 16. Together these three Rust Belt states deliver a total of 49 electoral college votes.

As with the Rust Belt, Harris would likely become president if she won all four.

If Trump swept all the swing states in the Sun Belt, he would still need to pick up one more state.

Graphic showing that winning all four Sun belt states would give Kamala Harris exactly 275 electoral college votes. In contrast, if Donald Trump won all four of these states he would still be two votes short of victory.

However, though the margin of victory would be more comfortable than sweeping the Rust Belt, it feels an unlikely path to victory for Harris as the Democrats haven’t won all four of these states since Harry Truman was elected in 1948.

Unlike the Democrats, Republicans do have a history of sweeping these states. Since the Civil Rights Act upended the political map in the 1960s: Presidents Nixon, Reagan, Bush and Bush Jr each won all four of these states at one or more elections.

Graphic showing the support among of the black voters nationally for Democrat and Republican candidates at the previous two elections. In 2016, Hilary Clinton received 91% and Trump 6%. In 2020, Joe Biden received 92% and Trump 8%. In 2024, polls predict Kamala Harris will received 78% and Trump 15%.

There are two key groups that could help decide the results in the Sun Belt: black and Latino voters.

In both Georgia and North Carolina a large percentage of eligible voters are black. Harris will hope she can match Joe Biden’s performance with those voters; he won 92% of all black votes across the US in 2020, but some recent polls have suggested Harris is struggling to hit similar numbers.

Arizona and Nevada have fast-growing Latino populations and for a long time, Democrats assumed an increase in Latino voters in any state would automatically increase their chances of winning. But Donald Trump surprised many by making in-roads with Latino voters at the last two elections, with his perceived strength on the economy being particularly attractive.

However, Republicans are concerned that widely-reported comments about Puerto Ricans and other Latinos by speakers at Trump's recent Madison Square Garden rally, which leant heavily on racist stereotypes, could undo some of those gains.

TRUMP KEY STATE: North Carolina

Donald Trump held North Carolina in the last two elections and it wasn’t considered a swing state until Kamala Harris took over the Democratic ticket.

If Trump failed to hold North Carolina, his route to the White House becomes much harder as he would need to win at least two of the Rust Belt states and two more in the Sun Belt.

The state has only voted for the Democratic candidate once since 1980 – for President Obama in 2008.

But there is a chance Harris could take it if she can inspire black voters to turn out, as they did for Obama, and she picks up votes from the recent influx of college-educated voters.

Chasing persuadables

Campaign aides for Harris believe that around 10% of voters in all seven battleground states are still persuadable, and they haven't given up on changing hearts and minds in an election where the slightest shift in a swing state could have major electoral implications. In North Carolina, a state Democrats still believe they can flip despite an uphill battle, Harris has focused on Republican college-educated, suburban women who are turned off by the former president's rhetoric. Meanwhile, the Trump campaign has grown more confident about Georgia and North Carolina, and the former president has also set his sights on becoming the first Republican presidential nominee to win Nevada since George W Bush won it in 2004.

Byline image: Courtney Subramanian, News editor, BBC News, Washington
Graphic showing Nevada has 6 electoral college votes, Arizona 11, North Carolina 16 and Georgia 16. Together these three Rust Belt states deliver a total of 49 electoral college votes.

The states in the southern US are often referred to as the Sun Belt for the obvious reason that they have a hotter climate than those in the north.

There are four swing states in the south at this election: Arizona, Georgia, Nevada and North Carolina. As with the Rust Belt, Harris would become president if she won all four.

However, it feels an unlikely path to victory for Harris as the Democrats haven’t won all four of these states since Harry Truman was elected in 1948.

Graphic showing that winning all four Sun belt states would give Kamala Harris exactly 275 electoral college votes. In contrast, if Donald Trump won all four of these states he would still be two votes short of victory.

If Trump swept all the swing states in the Sun Belt, he would still need to pick up one more state.

But, unlike the Democrats, Republicans do have a history of sweeping these states. Since the Civil Rights Act upended the political map in the 1960s: Presidents Nixon, Reagan, Bush and Bush Jr each won all four of these states at one or more elections.

Graphic showing the support among of the black voters nationally for Democrat and Republican candidates at the previous two elections. In 2016, Hilary Clinton received 91% and Trump 6%. In 2020, Joe Biden received 92% and Trump 8%. In 2024, polls predict Kamala Harris will received 78% and Trump 15%.

There are two key groups that could help decide the results in the Sun Belt: black and Latino voters.

In both Georgia and North Carolina a large percentage of eligible voters are black. Harris will hope she can match Joe Biden’s performance with those voters; he won 92% of all black votes across the US in 2020, but some recent polls have suggested Harris is struggling to hit similar numbers.

Arizona and Nevada have fast-growing Latino populations and for a long time, Democrats assumed an increase in Latino voters in any state would automatically increase their chances of winning. But Donald Trump surprised many by making in-roads with Latino voters at the last two elections, with his perceived strength on the economy being particularly attractive.

However, Republicans are concerned that widely-reported comments about Puerto Ricans and other Latinos by speakers at Trump's recent Madison Square Garden rally, which leant heavily on racist stereotypes, could undo some of those gains.

Empty line for spacing

TRUMP KEY STATE: North Carolina

Donald Trump held North Carolina in the last two elections and it wasn’t considered a swing state until Kamala Harris took over the Democratic ticket.

If Trump failed to hold North Carolina, his route to the White House becomes much harder as he would need to win at least two of the Rust Belt states and two more in the Sun Belt.

The state has only voted for the Democratic candidate once since 1980 – for President Obama in 2008.

But there is a chance Harris could take it if she can inspire black voters to turn out, as they did for Obama, and she picks up votes from the recent influx of college-educated voters.

Chasing persuadables

Campaign aides for Harris believe that around 10% of voters in all seven battleground states are still persuadable, and they haven't given up on changing hearts and minds in an election where the slightest shift in a swing state could have major electoral implications. In North Carolina, a state Democrats still believe they can flip despite an uphill battle, Harris has focused on Republican college-educated, suburban women who are turned off by the former president's rhetoric. Meanwhile, the Trump campaign has grown more confident about Georgia and North Carolina, and the former president has also set his sights on becoming the first Republican presidential nominee to win Nevada since George W Bush won it in 2004.

Byline image: Courtney Subramanian, News editor, BBC News, Washington

At the last two elections the winning candidate - Donald Trump in 2016 and Joe Biden in 2020 - won six of the seven 2024 swing states.

Graphic showing the winning party in the seven swing states at the two previous elections. In 2016, Wisconsin, Michigan, Pennsylvania, Arizona, North Carolina and Georgia all voted for Donald Trump , while Nevada voted for Hillary Clinton. In 2020, Wisconsin, Michigan, Pennsylvania, Arizona, Georgia and Nevada all voted for Joe Biden, while North Carolina voted for Donald Trump.

Trump missed out on Nevada by only 27,000 votes, and Biden lost in North Carolina by around 75,000 - having improved on Hilary Clinton’s total there in 2016 by over 100,000 votes.

A small difference in turnout could have seen Trump or Biden sweep all these states, and at this election it's possible either candidate could do the same.

Neither of them has a decisive lead in the polls in any of the seven swing states at the moment but the margin of error in each poll means one of them could be further ahead than it appears.

If polls have underestimated support for Trump like they did in 2016 and 2020 then he could well end up winning all seven swing states and even picking up another state or two elsewhere in the country.

But equally, if pollsters' assumptions about turnout are wrong and enthusiasm within the Democratic Party helps bring record numbers of Kamala Harris supporters out to vote in key states, then she could end up with a winning map that looks like Biden's in 2020.

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Polls and predictions

The polls suggest this could be one of the closest US elections in history - but should we be surprised if it isn't? Not really. In fact, we should expect the polls to be slightly out because they’re designed to broadly explain how the public feels about a candidate, not predict the result in a swing state by less than a percentage point. The average gap between Harris and Trump across all seven swing states at the moment is just over one percentage point. The average state-level polling error in the last six presidential elections was just over four points. Keep that in mind when you're thinking about possible outcomes in this election.

Byline image: Mike Hills, Senior Journalist, Visual Journalism team
Graphic showing the winning party in the seven swing states at the two previous elections. In 2016, Wisconsin, Michigan, Pennsylvania, Arizona, North Carolina and Georgia all voted for Donald Trump , while Nevada voted for Hillary Clinton. In 2020, Wisconsin, Michigan, Pennsylvania, Arizona, Georgia and Nevada all voted for Joe Biden, while North Carolina voted for Donald Trump.

At the last two elections the winning candidate - Donald Trump in 2016 and Joe Biden in 2020 - won six of the seven 2024 swing states.

Trump missed out on Nevada by only 27,000 votes, and Biden lost in North Carolina by around 75,000 - having improved on Hilary Clinton’s total there in 2016 by over 100,000 votes.

A small difference in turnout could have seen Trump or Biden sweep all these states, and at this election it's possible either candidate could do the same.

Neither of them has a decisive lead in any of the seven swing states at the moment but the margin of error in each poll means one of them could be further ahead than it appears.

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If polls have underestimated support for Trump like they did in 2016 and 2020 then he could well end up winning all seven swing states and even picking up another state or two elsewhere in the country.

But equally, if pollsters' assumptions about turnout are wrong and enthusiasm within the Democratic Party helps bring record numbers of Kamala Harris supporters out to vote in key states, then she could end up with a winning map that looks like Biden's in 2020.

Polls and predictions

The polls suggest this could be one of the closest US elections in history - but should we be surprised if it isn't? Not really. In fact, we should expect the polls to be slightly out because they’re designed to broadly explain how the public feels about a candidate, not predict the result in a swing state by less than a percentage point. The average gap between Harris and Trump across all seven swing states at the moment is just over one percentage point. The average state-level polling error in the last six presidential elections was just over four points. Keep that in mind when you're thinking about possible outcomes in this election.

Byline image: Mike Hills, Senior Journalist, Visual Journalism team

There are combinations of states that could leave the final result with Harris and Trump tied on 269 votes each.

The most frequently discussed of these is Kamala Harris failing to pick up the single vote she is expected to win in Nebraska.

Nebraska is one of only two states which assign some of their electoral college votes to the winners in individual districts, rather than giving all of them to the candidate with the most votes in the state as a whole.

A map showing the state of Nebraska and highlighting the second congressional district, near the border in the east, centred around the city of Omaha.

Without that single vote from Nebraska’s second district, the Democrats most likely path to victory - winning all three Rust Belt states - would result in a tie instead.

The president is then decided by a vote in Congress with each state getting a single vote - unlike the electoral college where states with more citizens get more votes.

This would almost certainly result in Donald Trump being elected president, as the Republicans tend to win more states at each election, despite the Democrats receiving more votes in total across the country at seven of the last eight presidential elections.

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Unexpected patterns

There are scenarios that would result in a draw without the Republicans winning Nebraska’s second district. For instance, if Trump swept the Rust Belt and Harris took all the Sun Belt except Nevada they would finish with 269 votes each. But it seems unlikely to happen, because if Harris was winning like that in the south, you would expect her to also sweep up Nevada. Similarly, Trump winning only the three states of Michigan, Pennsylvania and North Carolina would result in a tie. However, if his political message proved that popular in Michigan and Pennsylvania, wouldn’t he also take Wisconsin? Then again, this election is so close in the polls that maybe the swing states could follow a pattern no-one expected.

Byline image: Paul Sargeant, Senior Journalist, Visual Journalism team
A map showing the state of Nebraska and highlighting the second congressional district, near the border in the east, centred around the city of Omaha.

There are combinations of states that could leave the final result with Harris and Trump tied on 269 votes each.

The most frequently discussed of these is Kamala Harris failing to pick up the single vote she is expected to win in Nebraska.

Nebraska is one of only two states which assign some of their electoral college votes to the winners in individual districts, rather than giving all of them to the candidate with the most votes in the state as a whole.

Without that single vote from Nebraska’s second district, the Democrats most likely path to victory - winning all three Rust Belt states - would result in a tie instead.

The president is then decided by a vote in Congress with each state getting a single vote - unlike the electoral college where states with more citizens get more votes.

This would almost certainly result in Donald Trump being elected president, as the Republicans tend to win more states at each election, despite the Democrats receiving more votes in total across the country at seven of the last eight presidential elections.

Empty line for spacing

Unexpected patterns

There are scenarios that would result in a draw without the Republicans winning Nebraska’s second district. For instance, if Trump swept the Rust Belt and Harris took all the Sun Belt except Nevada they would finish with 269 votes each. But it seems unlikely to happen, because if Harris was winning like that in the south, you would expect her to also sweep up Nevada. Similarly, Trump winning only the three states of Michigan, Pennsylvania and North Carolina would result in a tie. However, if his political message proved that popular in Michigan and Pennsylvania, wouldn’t he also take Wisconsin? Then again, this election is so close in the polls that maybe the swing states could follow a pattern no-one expected.

Byline image: Paul Sargeant, Senior Journalist, Visual Journalism team