Montana: Here's the ~101,000 residents who could lose coverage, by county

In Montana, assuming 59,000 people enroll in private exchange policies by the end of January, I estimate around 39,000 of them would be forced off of their private policy upon an immediate-effect full ACA repeal, plus another 61,000 enrolled in the ACA Medicaid expansion program, for a total of 101,000 Montana residents kicked to the curb.

As for the individual market, my standard methodology applies:

• Plug in the 2/01/16 QHP selections by county (hard numbers via CMS)
• Project QHP selections as of 1/31/17 based on statewide signup estimates. In Louisiana, I actually expect the number of exchange QHPs to drop by about 17% from last year, mainly due to cannibalization by the Medicaid expansion program of those in the 100-138% FPL income range.
• Knock 10% off those numbers to account for those who never end up paying their premiums
• Multiply the projected effectuated enrollees as of March by the percent expected to receive APTC subsidies
• Then knock another 10% off of that number to account for those only receiving nominal subsidies
• Whatever's left after that are the number of people in each county who wouldn't be able to afford their policy without tax credits.