The president’s advisers have predicted since 2010 that Latinos would be particularly enthusiastic about the benefits of the Affordable Care Act, a law that requires everyone to show proof of qualifying health insurance or pay a fine. And the law, in this first open enrollment year, will provide financial assistance to 85 percent of the 5.5 million federal and 2.6 million state-based enrollees.

Nonetheless, enrollment among Latinos (402,000) and among African-Americans (627,000) through this spring was less than the administration anticipated based on independent projections calculated at the outset, while sign-ups among Asian-Americans (300,400) nationwide appeared to exceed what experts initially forecast.

In Virginia, another demographically and politically evolving state, the latter made up 17.7 percent of that state’s total. In blue-state New Jersey, they accounted for at least 16.3 percent of the ACA customers.

The border states and Florida experienced appreciable Latino enrollments, suggesting that their GOP governors (and so-so public polling about the ACA) in Texas, Arizona, New Mexico, and the Sunshine State did not paint a full picture. In Texas, among enrollees who identified their race or ethnicity, 33.6 percent were Latino; in New Mexico, 31.1 percent; in Arizona, 24.2 percent; and in Florida, 19.2 percent, according to HHS.