Yes, some states would have to be split up. When for example I categorize the Left Coast, I do not mean eastern Washington or Oregon or Northern California above the bay or the Inland Empire. It includes Hawaii but not Alaska.
The rest of Virginia would be only too happy to hive off the 3 counties of Occupied Northern Virginia.
The rest of New York State outside of NYC is actually America.
The rest of Illinois HATES Shitcago with a purple passion.
A lot of the rest of Michigan feels the same way about Detroit
And Minnesota about the Twin Cities
and Georgia about Atlanta.
The Northeast runs from Occupied Northern Virginia to Boston. It includes Vermont, Rhode Island, Connecticut, Maryland, Philly (but not the rest of Pennsylvania), Delaware, maybe New Hampshire and maybe Maine, certainly all of Massachusetts.
The Blue areas are the Left Coast, the Acela Corridor and a few little islands like Chicago and Detroit. The red areas are everything else.
Bring back City-States.