US presidential election: what is the ‘Blue Wall’ and how can it be breached?
Among the fiercest battlegrounds in this year’s US presidential election are three states Donald Trump won in 2016 but lost in 2020

With mere days to go until the US presidential election on Tuesday, millions worldwide are trying to navigate the sometimes confusing campaign terminology used by political media.
One phrase is the “Blue Wall” – what is it, exactly? How can it determine whether the Republican Party nominee, former president Donald Trump, or the Democratic Party nominee, US Vice-President Kamala Harris, takes the White House?
In a presidential election, a candidate must secure at least 270 of 538 Electoral College votes. Each state is allocated electors based on its number of US representatives and senators, and a state’s electoral college votes go to the candidate who wins that state’s popular vote.