Texas

I'm not so sure this is a bad thing. As far as I can see, Texas is divided more or less into two regions - East/South of I35 and West of it, and I suspect that most of the crazies are in the west. Texit would tear the state apart, probably along that divide. SE Texas has most of the cities, the gulf coast, most of the refineries, and probably the bulk of the wealth outside of cattle, not to mention most of the population. The West is mainly plains and near desert, but has been gerrymandered to give the GOP a stranglehold on power. West Texas would be landlocked. If East and West were to split, this would actually create a blue state out of what has been a red/purple one, along with a deep red state.

We have a similar situation on the West Coast with "Jefferson", which would encompass lower Oregon and Upper California.That area is deeply conservative, and for the most part is a wasteland - dry, arid, and full of crazies. They've been itching to form their own state (or leave the country entirely) for years. If that happened, then statehood for Puerto Rico would likely be in the cards as well.