Obamacare’s supporters scored a victory as health insurerCentene Corp. decided to dramatically expand in Nevada, filling inrural counties that were at risk of having no options nextyear.

Centene said Tuesday that it will sell statewide viaits SilverSummit unit, a move that will help more of Nevada’sresidents gain Affordable Care Act coverage. Nationally,the decision will reduce the number of empty counties to two: onein Ohio and one in Wisconsin.

Many of Centene’s rivals have pulled back from the ACA, citingfinancial losses and uncertainty about how the Trump administrationwill run the health law’s markets. Centene, seeing an opportunityto profit as others retreat, has plans to expand in nine states fornext year. The company already had about 1.1 million Obamacarecustomers as of June 30.

Contributing to the unease for many insurers is the Trumpadministration’s threats to end the Obamacare subsidies that helpcover out-of-pocket costs for low income customers. TheCongressional Budget Office said on Tuesday that insurerswould probably boost mid-level premiums by 20 percent next year,and by 25 percent in 2020, if the subsidies end.

Related: State ACA exchange to HealthCare.gov: Please talkto us

The Nevada counties were left bare after Anthem Inc. and anotherinsurer exited the state. Anthem is scaling back in seven statesfor 2018, after offering ACA health plans in 14 this year. WithCentene’s move, more than 8,000 Nevadans will gain an Obamacareoption to get health coverage, Governor Brian Sandoval, aRepublican, said in a statement.

“This is a fantastic time to welcome SilverSummit to ourhealth-care market and express the state’s sincere gratitude forstepping up,” Sandoval said.

The other insurer offering health plans in parts of Nevada is aunit of UnitedHealth Group Inc., which has largely halted sales ofObamacare plans elsewhere.

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