TEN key Tory target seats shown in our map above will be among the first to declare.
The results of the first big three Labour marginals should be in by 2am giving an indication as to who might be walking into No10 if they go Tory.
Other key seats include Battersea, which was won by Labour in 2017 (at 2am).
Esher and Walton, where Foreign Secretary Dominic Raab is holding off a Lib Dem fight and Belfast North, where DUP Westminster leader Nigel Dodds is fighting off Sinn Fin, after other remain parties pulled out.
Guide to the night
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