In a perfect world we would put all dems in New England (really prefer another country) but for this scenaria NE will do. They could seceded but they would all have to live in NE. None in any other state. If someone becomes a dem/leftist they would, by law, have to relocate to NE within 45 days.
This would free up the beautiful states of California, Oregon, and Washington for acceptable living conditions again along with, of course, all the current blue states outside NE.
Leftism would be treated with the same concern as a highly contagious and deadly disease such as ebola. It really should be right now.
If only we could get our hands on Greenland
From the novel I am writing:
When California seceded, Washington, Oregon, and New York quickly followed declaring that their new union to be called the Peoples Republic of America. The New England states, Michigan, Minnesota, Illinois, and Pennsylvania followed suit to join the PRA, as did Maryland, New Jersey, Delaware, Hawaii, New Mexico, and Colorado. Parts of California split, denounced the secession; forming a new state called Jefferson and applied for statehood in the old USA. Eastern Washington and most of Oregon also left the PRA. The rural parts of Minnesota, Illinois and Pennsylvania divorced themselves from the left wing lunacy of Minneapolis, Chicago, and Philadelphia.