In case you’ve missed the news of of rural Northern Colorado, a number of counties there wish to secede from the state because those darn city slickers in Denver just don’t listen to their concerns. Although the chances are nearly impossible since it would require an amendment to the Colorado constitution and approval of Congress, nothing has deterred them yet.
One of the leaders of the movement, however, Weld County Commissioner Sean Conway made a much more plausible case: admit the new state of “Northern Colorado” along with another state, either Puerto Rico or Washington, D.C. As some of you may or may not know (though I’ve mentioned before), residents of the District of Columbia do not have representation in Congress. In other words, they have taxation without representation.
The idea is pretty clear: admit one Republican-leaning state and one Democratic-leaning state. The action would have precedent: the Missouri Compromise admitted Maine and Missouri together in order to maintain the balance of free and slave states.
I was curious what the addition of D.C. and Northern Colorado would do to state Congressional apportionment if Congress maintained the current 435 seats in the House (the Senate would likely add two Republican Senators and two Democratic Senators, keeping the current balance, though breaking a filibuster would be even slightly harder because 63 votes — or 60.6% of the Senate — would be required rather than the current 60). I wrote a Stata script to implement the “Amazing Apportionment Machine.”