The most over-represented region consists of Texas, Oklahoma, Arkansas, and Louisiana. The most under-represented region is the Northeast from Pennsylvania upwards.

The Mountain West — Montana, Idaho, Wyoming, Colorado, Nevada, Utah, Arizona, and New Mexico — is over-represented. So is Southeast.

The Pacific West and the Midwest are underrepresented. The Midwest’s short-fall in the military surprised me. But the much of that region has been trending Democratic for some time.