The conflict would shake down to red counties vs blue counties.
Those residents of the blue counties wouldn’t fight, as they wouldn’t think of their domain worth dying for. The red county residents would agree and not be likely to invade the RAT cities.
If the thieving blue sewer RATs were to storm into the countryside, the conservatives would shoot them.
The blue counties would have trouble protecting their Starbuck supply lines should they try and invade inland to the red areas. Also, they would have 250 support people doing nothing for each actual troop.