Democratic nominee Joe Biden leads President Donald Trump in a series of polls, as the candidates criss-crossed swing states in their final sprint for the race for White House before polling ends on Tuesday. New York Times/Siena College poll showed Biden ahead in Pennsylvania, Florida, Arizona and Wisconsin, all key swing states that Trump carried in 2016. A CNN poll showed Biden up in Arizona, Michigan and North Carolina, also states Trump won in 2016 The result is usually called on the night of election day, which this year is Tuesday 3 November. Different states stop voting at different times. The first polls close on the East Coast at 19:00 local time (00:00 GMT). This is followed by a running total of votes as they are reported in each state. The full count is never completed on election night – but enough votes are usually in to confirm a winner. A state is “called” by major US media outlets when they believe one candidate has an unbeatable lead. But at this stage, when most but not all of the votes will have been counted, this is a projection, not the final result.