I've long wanted to kill (or drastically reduce) the narrative of "the swing voter" -- who mostly doesn't matter, and even if they do, is not reliable enough to be able to "influence."

In the US, it's basically about turnout and/or "suppression." There's a wall of "red no matter who" that's kind of the default, and whether or not blue wins is up to getting enough young people excited -- and perhaps, more importantly, ensuring that blue voters and votes aren't "cheated."