Most uninsured Americans are sitting on the sidelines as sign-up season under the federal health law comes to a close, according to a new poll that signals the nation’s historic gains in coverage are slowing. The survey released Thursday by the Kaiser Family Foundation finds that:

– Only 15% of the uninsured know this year’s open enrollment deadline, which is Sunday.

– More than 7 in 10 say they have not tried to figure out if they qualify for the two main coverage expansions in the law, Medicaid and subsidized private health insurance.

– Only 1 in 100 know the minimum penalty for being uninsured is going up to $695 in 2016.