The map displays 308,745,538 dots, one for each person residing in the United States at the location they were counted during the 2010 Census. Each dot is color-coded by the individual's race and ...

The so-called dasymetric dot density map is one of them. ... This map uses color to highlight vote share in counties that flipped from red to blue or blue to red between the 2012 and 2016 elections.