12.30am
West Virginia (four EVs), a safe Republican state, should be called quickly for Trump.
Ohio (17 EVs) used to be a swing state – Barack Obama won close contests here in 2008 and 2012 – but since 2016 it has trended towards safe Republican territory and should be called for Mr Trump reasonably promptly.
By contrast, North Carolina (16 EVs) has become a swing state at this election, with opinion polls suggesting either candidate has a chance of victory.
As such, the winner might not become clear for some time.
1am
A flurry of projections is likely when polls close in more than a dozen safe states.
Ms Harris should pick up the Democrat-leaning states of Connecticut (seven EVs), Delaware (three), Illinois (19), Maryland (10), Massachusetts (11), New Hampshire (four), New Jersey (14) and Rhode Island (four), along with the District of Columbia (three).
Mr Trump ought to see Alabama (nine), Florida (30), Mississippi (six), Missouri (10), Oklahoma (seven) and Tennessee (11) added to his tally.
Maine does not have a winner-take-all policy for its four electoral votes; rather, it allocates two votes to the winner within each of its two Congressional districts and two to the winner of the overall state-wide popular vote.
In 2020, Joe Biden won the two state-wide votes and one of the district votes, giving him three of the four votes up for grabs, while Donald Trump won the other district vote.
Polls are also due to close in another of the swing states, Pennsylvania (19 EVs).
The state was solidly Democrat until Mr Trump won it narrowly in 2016, before Mr Biden took it back in 2020.
Due to the huge number of postal and early votes cast, which will need to be sorted and counted, the outcome in Pennsylvania is not likely to be known for some considerable time.
1.30am
Polls close in Arkansas (six EVs), another strongly Republican state.
2am
A rush of safe states should deliver a sizeable number of electoral votes for both candidates.
Kansas (six EVs), Iowa (six), Louisiana (eight), North Dakota (three), South Dakota (three), Texas (40) and Wyoming (three) are all likely to be called fairly quickly for Mr Trump.
Ms Harris ought to collect Colorado (10 EVs), Minnesota (10), New Mexico (five) and New York (28).
Nebraska, like Maine, does not have a winner-take-all policy and instead splits its electoral votes – in this case, allocating three votes to the winner within each of its three Congressional districts and two to the winner of the overall state-wide popular vote.
In 2020, Joe Biden won one of the three district votes, while Donald Trump won the other two plus the two state-wide votes, giving him four of the five votes up for grabs.
Polls also close in three swing states: Arizona (11 EVs), Michigan (15) and Wisconsin (10), all of which – if the outcome is close – could take days to be decided.