It is not all one things.
https://www.usatoday.com/story/money/economy/2018/01/15/fastest-growing-and-shrinking-states-closer-look/1019429001/
There are both red states and blue states among the growing and shrinking states. If you look at other things ...most business friendly states, best state to live in, etc...same thing a mix or red and blue states.
But facts mean nothing to you...all to serve a political statment