I think equally important is the prevalence of single issue voters. Each of the parties has captured a collation of voters using a small number of issues.
Pro Immigration / Anti Immigration
Social Justice / Social Darwinism
Reproductive rights / Protection for the unborn
Gun Control / Gun rights
Raise Taxes / Cut Taxes
Environment / Drill baby drill
More Regulation / Deregulation
Federal Controls / States Rights
Raise Federal Minimum Wage / No Federal Minimum wage
Federal Health Care / Private Health Care
Many voters may claim to be Independent but they will mostly still vote based on one or two of these issues. They really have picked a side they just don’t want to wear a party label.
TEK