Donald Trump and Joe Biden zero in on key swing states

President Donald Trump arrives for a campaign rally at John Murtha Johnstown-Cambria County Airport (Evan Vucci/AP)

President Donald Trump and Democratic challenger Joe Biden concentrated Tuesday’s election campaigning on battleground states both see as critical to clinching an Electoral College victory.

Mr Biden went to Florida to court seniors, looking to deliver a knockout blow in a state Mr Trump needs to win while trying to woo a group whose support for the president has slipped.