Too much can be made of Presidential trends, take this for example:
Take the Missouri Compromise line (the southern border of Missouri) and extend it across the country.
From 1852, a few years before the Civil War, until 1960, every single elected President regardless of party came from above the line. That is 28 straight elections.
Then from 1964 to 2004, every single elected President regardless of party came from below the line. That’s 11 straight elections
President Reagan was born in Tampico, Illinois, and President Bush 41 was born in Milton, Massachusetts, both above that line, I believe.