This is an important point, and there are plenty of recent elections that affirm it. If the Florida panhandle were part of Alabama, and Michigan's upper penins

This is an important point, and there are plenty of recent elections that affirm it. If the Florida panhandle were part of Alabama, and Michigan's upper peninsula were part of Wisconsin, the result of the 2016 election would have been reversed. The 2000 election was decided by ~500 voters in Florida.