Joe Biden speaks at a campaign event in Georgia this week (Image: AP/Andrew Harnik)

In the anxious days before the United States election, Joe Biden maintains a healthy polling lead that, thanks to the shock of 2016, many aren’t ready to believe.

Of course, there’s still a chance Donald Trump could rev up his base in the coming days, and stitch together an electoral college majority by threading the needle through the swing states that narrowly voted for him in 2016.

But there’s another possibility.