As an American, let me assure you, there are plenty of swing voters. Altogether too many, honestly. People who are deeply political often spend their time around others who are deeply political, which colors their views significantly.

The Dem tendency to chase the swing voter is real, and counterproductive, but it’s not for an imaginary voter. The issue is that the swing voter they’re trying to appeal to isn’t voting on policy. They’re voting on feelings. So when the Dems move their policy right, they piss off and demoralize large amounts of left-leaning voters, but do only a little to sway swing voters.