On Tuesday, November 5, the United States of America will go to the polls to decide who will spend the next four years in the White House - Kamala Harris or Donald Trump.
Both candidates have had the momentum behind them at different points since current President Joe Biden announced he’d not be seeking a second term, but neither have been able to open up a significant lead.
In order to win, one of them will need to reach a majority of 270 electoral college votes out of the 538 available (535 electors from the 50 states and three from the federal District of Columbia).
And to get to that magic number they’ll need to win the popular vote in as many states as possible.
Many are already in the bag, with the likes of New York certain to vote Democrat and Tennessee sure to support the Republicans.
It means that the entire election will hang on a number of ‘swing states’ - those where both parties attract almost equal support.
Here are the crucial dozen with the tightest races, according to the UK bookies.
1. Pennsylvania
The bookies can't split the two parties in the race to take Pennsylvania. Both the Republicans and Democrats are priced the same - 5/6 - to take the state, which is the fifth-most populous in the United States, with around 13 million residents. | Canva/Getty Images
2. Wisconsin
The Democrats are slight favourites to take Wisconsin with odds of 8/11, but the Republicans are not far behind at evens (1/1). It sits in the Great Lakes region of the Upper Midwest of the United States. | Canva/Getty Images
3. Nevada
Home to Las Vegas - the entertainment capital of the world - Nevada also looks like being a key election battleground. The Democrats hold the edge currently at 4/6, with the Reublicans priced at a slightly longer 11/10. | Canva/Getty Images
4. Michigan
Winning Michigan could be key to getting to the White House. The Democrats are in the driving seat according to UK bookies, priced at 8/11, with the Republicans lagging with odds of evens (1/1). Bordering fellow swing state Wisconsin, its largest city is Detroit. | Canva/Getty Images