States that tend to vote Democratic pay more in federal taxes than they receive in federal spending. States that tend to vote Republican receive more than they pay (those unproductive moochers!).
I don’t know which kinds of federal spending are involved. It’s most likely spending on social welfare programs like Medicare and Medicaid, and the salaries of federal employees, including the military.
It’s an interesting situation nonetheless. How would lower taxes and reduced spending affect the people who yearn for lower taxes and supposedly want reduced federal spending?