So Who Are the 'Uninsured,' Anyway?

Supporters of the Affordable Care Act are basically counting on its beneficiaries to make it impossible to repeal. That makes it important to know exactly how many of those beneficiaries there are.

As I've written before, it's hard to know yet -- Medicaid signups will continue for the rest of the year, and while we know how many people selected a policy on the exchanges, we don't know how many of them have paid. But one number should be pretty easy to figure out: how many young people have gained insurance through their parents' policies, thanks to the Obamacare provision that allows them to stay on those policies until they are 26.