They have put together voting demographic data into a adjustable sliders to show how the electoral map changes with different demographics voting habits.
You can see things like how if black, latinx, and asian voters increased their turnout to 75% most of the country goes blue or how greatly increasing the 3rd party support doesn’t really impact the actual election. Or that if white people even went 1-2% more in favor of the Democrats that the GOP is finished.
A lot of fun data manipulation.
EDIT
Wow, I missed this and it’s really old. This is all based on pre-election polling data and previous elections.
