Candidates try to divine trends as nearly 70m Americans have cast early votes

Almost 70 million Americans have already voted in the historic US election which comes to a head on Tuesday, prompting furious arguments over what early voting trends might mean as Donald Trump and Kamala Harris prepare for their final showdown.

As both candidates and their top surrogates crisscrossed the country in a furious bout of last-minute campaigning, the race remains in a virtual dead heat – both in the head-to-head national polls and in the crucial seven battleground states that will actually decide the race for the White House.

But as Trump and Harris made their pitches for what must now be a vanishingly small number of still undecided voters, tens of millions of Americans have already cast their ballots in the election through the various processes in the US that allow early voting.

With so much at stake in the election, that huge number has triggered intense speculation as to what it might that mean with both Republicans and Democrats attempting to glean information that shows their side might already have the edge as voting day nears.

Harris’s campaign is latching on to some key information from the crucial swing state of Pennsylvania. The giant state – which stretches from New Jersey in the east to Ohio in the west – is a part of the “rust belt” dominated by former manufacturing cities that is seen as probably the most crucial region in the election.

Nearly all the most likely paths to victory for both candidates involve picking up rust belt states with Pennsylvania as the biggest prize.

In that state, voters over the age of 65 have cast nearly half of the early ballots and registered Democrats account for about 58% of votes cast by seniors, compared with 35% for Republicans. That is a big lead in a demographic that usually trends towards Trump.

At the same time, women have a 10-point gap over men when it comes to the early vote in Pennsylvania, according to analysis by the Politico website, using data from the University of Florida’s United States Election Project. Another analysis, by NBC, showed an even larger gap in favor of women in the state of 13 points.

Harris and her team are hoping for a large showing of women in the election as they have made the loss of reproductive rights central to their campaign after the supreme court overturned federal abortion rights. Women have trended strongly Democratic in the election, while men have leaned more Republican and thus any signs of a strong turnout by women is potentially good news for the vice-president.

“The gender gap is a key reason for hope among Democrats and concern among Republicans, especially when many states have abortion rights amendments on their ballots in the 2024 election,” Thomas Miller, a data scientist at Northwestern University, told Newsweek.

But Republicans too are seeing signs of hope in the early voting trends – a sign that America’s divisive election is still proving impossible to predict even after almost two years of furious campaigning by both parties.

In Arizona, a crucial swing state in the so-called “sun belt” on electoral battlegrounds, male voters have been turning out in increased numbers – a sign that Republican strategies of turning out men who have not voted before might be working. In Arizona last week, the number of new voters in Arizona was 86,000 – far more than the tiny margin by which Joe Biden beat Trump in the state in 2020 – and the biggest share of those new voters were male Republicans.

Overall, Republicans have traditionally been outnumbered in early voting with more Democrats choosing to go to the polls. In part, that has been because Trump and some of his allies have assailed early voting with baseless claims of fraud and conspiracy, despite Republican professional campaigners exhorting their supporters to get to the polls before election day.

In 2024, there are signs that Republicans are indeed heading to the polls early in large numbers.

In Georgia – another key sun belt battleground in the deep south – there are strong signs of a significant early Republican turnout. More than 700,000 people who voted already in 2024 did not vote at all in 2020, according to Georgia Votes, and that is seen as a sign that many of them might be Republicans as the campaign has focused on that demographic. At the same time, the top three counties for voter turnout rates in Georgia are rural areas won easily by Trump in 2020.

“We’ve got a lot of voters that voted in 2016 but didn’t vote in 2020 … What makes me believe that they are Trump voters is that most of them are … from parts of the state that are pretty strong Republican strongholds,” Georgia’s lieutenant governor, Burt Jones, told Fox News.

Of course, as voting patterns shift for both sides, it could also be that an advantage in early voting for either Democrats or Republicans is quickly overwhelmed on election day itself when tens of millions of voters go to the polls in person.

In the end, the 2024 race remains entirely unpredictable. The Guardian’s 10-day polling average tracker has shown little change over the past week, after a slight erosion in Harris support over October, Harris retains a one-point advantage in national polls of 48% to Trump’s 47%, virtually identical to last week and well with the margin of error of most polls.

The battleground states, too, remain in a dead heat. The candidates are evenly tied at 48% in Pennsylvania while Harris has single-point leads in the two other rust belt states of Michigan and Wisconsin. Meanwhile, Trump is marginally ahead in the sun belt, where he is up by 1% in North Carolina, 2% in Georgia and Arizona, and ahead in Nevada by less than a percentage point.

But one wildcard for both campaigns is the Muslim vote, angered by US support for Israel in its attacks on Gaza and Lebanon. A poll released on Friday by the Council on American-Islamic Relations showed that 42% of the country’s 2.5 million Muslim voters favor Green party nominee Jill Stein for president while 41% favor Harris. Trump registered 10% support.

In theory, those margins of support for Stein, as in 2016, could swing some key swing states, such as Michigan, to Trump if the contest there is very close.