More than 15 million people have signed up for plans in states that use HealthCare.gov, representing a 33 percent increase from last year. The Biden administration estimates 19 million will sign up for plans by the Jan. 16 deadline.  

On Dec. 15, the deadline for coverage starting Jan. 1, more than 745,000 people selected a plan through HealthCare.gov — the most in a day in history, the Department of Health and Human Services said.  

For 2023 plans, more than 16.3 million people signed up through HealthCare.gov last year, another record. Of those who enrolled for this year, 22 percent were new to the marketplace. 

This year’s enrollment had some unusual factors that may have played a part in boosting enrollment. Those who were disenrolled from Medicaid this year during the “unwinding” period were allowed to sign up for ACA plans earlier than normal. 

There was also stronger insurer participation in the program this year, providing significantly more options for customers to choose from. 

“Thanks to policies I signed into law, millions of Americans are saving hundreds or thousands of dollars on health insurance premiums,” President Biden said on Wednesday. 

“Extreme Republicans want to stop these efforts in their tracks,” he added. “At every turn, extreme Republicans continue to side with special interests to keep prescription drug prices high and to deny millions of people health coverage.”