WASHINGTON (AP) — Officials say a mad rush to sign up for health insurance before last night's midnight deadline could put the government on track to have more than 7 million Americans enrolled.

But the administration has not said how many of those who already have signed up closed the deal by paying their first month's premiums.

And it doesn't know how many of those signups were previously uninsured.

That's the real test of Obama's health care overhaul.