Federal Health Market Surpasses 1 Million Signups

A December surge propelled health care sign-ups through the government's rehabilitated website past the 1 million mark, the Obama administration said Sunday, reflecting new vigor for the problem-plagued federal insurance exchange.

Of the more than 1.1 million people now enrolled, nearly 1 million signed up in December, with the majority coming days before a pre-Christmas deadline for coverage to start in January. Compare that to a paltry 27,000 in October —the website's first, error-prone month — or 137,000 in November.

The figures tell only part of the story. The administration...