Across the entire US there are a total of 538 Electoral College votes up for grab 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 is 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.
Both candidates will need to win several swing states to get them over the line; Harris needs at least three and Trump needs a minimum of four.
There are many different swing state combinations that could take either past 270 – but some are more likely than others.
