UPDATE 4/15/17: ALL 50 STATES (+DC) NOW COMPLETE!!
Earlier this year, I crunched a mountain of numbers to try and put together an estimate of just how many people are at risk of losing healthcare coverage completely if & when the Affordable Care Act is "cleanly" repealed--that is, a full and complete repeal of the entire law, without any other significant healthcare law replacing it whatsoever. My rough estimate? Around 24 million people, broken out by Congressional District.
Sometime after that, the Congressional Budget Office ran the numbers to see just how many people they expected would lose healthcare coverage if the GOP's American Health Care Act (Trumpcare) "Obamacare replacement plan" were to be signed and put into effect. Their conclusion? ALSO around 24 million people.