Progressives would never let that happen for the same reason that they deny states rights and refuse to denounce their U.S. citizenship (despite their hate for this great nation) and move to any of their left-wing "utopias": because they realize they won't have any conservatives to mooch off of. They know they can't survive without conservatives. Which is why they want to eliminate all forms of government other than a centralized, federal government with unlimited power.
Conservatives show that they despise the United States so much that they want to cut and run- to destroy the United States.