Donald Trump. Joe Biden

Biden will face Trump on Sept. 29, 2020, for the first of three U.S. presidential election debates (Olivier DOULIERY and Brendan Smialowski / AFP via Getty Images)

Where the U.S. election will be won or lost (and why Trump still has a shot): 338Canada

Philippe J. Fournier: Biden’s lead in the polls has been remarkably consistent. The key will be what happens in states Trump narrowly won in 2016.