You don't need to wait for broadcasters to call tonight's referendum – here's your cheatsheet.
Voting for the EU Referendum is made up of 382 individual contests across the UK (that includes the Isles of Scilly and Gibraltar).
These 382 districts will report the results in the local area as soon as they count them, and we have a good idea of when each district will report.
The first results, in Newcastle and Sunderland, are expected tonight at around 12.30am.
They will be followed by the City of London at 12.45am, with Swindon, Oldham and Darlington reporting around then or closer to 1am.
Seven other districts are due at 01.30am, with around two dozen due at 2am. The deluge begins at 3am and the result should be known by 5am.
As every result comes out, you can get a sense of what's happening by comparing the actual result in every contest with the predictions in the list below.
These predictions are based on a 50:50 overall result.
In other words, a six-point lead for Leave in Sunderland is what these predictions suggest would happen if the race is a tie overall.
So if Remain win in Sunderland, that could be an indication of a strong night for them. While if Leave win by huge margins, perhaps they will win big tonight.
The 24 most important results to watch are in bold below – these will tell us who is most likely to win nationally.
But each estimate is probabilistic, which means they really say “90 times out of 100, anything from a 1-point win for Remain to a 13-point win for Brexit in Sunderland is consistent with a 50:50 overall vote.”
Nevertheless, if tonight's results differ significantly in many seats all in one direction - significantly more for Leave or for Remain - that will be a very good indication of who's won.
We've highlighted the first few contests and the two dozen that are set to come closest to a tie. Keep your eye on these in particular.
