Your Medicare, Medicaid or Affordable Care Act coverage won’t vanish during the government shutdown, but changes to some benefits and fewer government workers to help could still disrupt care for millions.

At the heart of the shutdown fight is whether Republican leaders accept a demand from Democrats to extend Obamacare subsidies before they expire at the end of the year and premiums start skyrocketing. Democrats also sought to undo President Donald Trump’s Medicaid cuts, but the GOP has shown no interest.