NAPLES — Federal subsidies for Affordable Care Act health insurance expired last year, leaving Floridians facing steep premium increases just as the state's 22nd Congressional District heats up in one of the nation's most competitive races.

The state's Office of Insurance Regulation reported an average premium increase of 10.4 percent across Florida after the subsidies ended. The timing—coinciding with open enrollment and Election Day—has made healthcare affordability a central issue for voters in a district that spans from the Gulf Coast to Palm Beach suburbs, mixing wealthy communities with working-class families.

Brittany Garcia, a 23-year-old registered nurse, has no health insurance. Working as a contractor, she sought plans on the healthcare marketplace but found coverage unaffordable. Previously a Republican voter, Garcia now says she is uncertain how she will vote. "This time, I'm just voting with my convictions," she said.

In Collier County, northeast of Naples, resident Bianca and her husband have been without insurance since January. Their insurance agent told them premiums "doubled or tripled" after the federal subsidy expired. Without coverage, Bianca paid out of pocket for an emergency hospital visit and pneumonia treatment. She asked that her full name not be used, citing concerns about harassment in her community.

Bianca plans to vote for Democratic nominee Pia Dandiya, citing healthcare as her primary reason. "She is trying to expand the Affordable Care Act, which I think is really important, especially for families like mine and my husband, where we're working 40 hours a week," Bianca said.

The 22nd District, which includes a diverse population with significant communities of Haitian, Mexican, and Guatemalan immigrants, has swung between parties in recent elections. Healthcare affordability is emerging as a decisive issue that could shift political calculations in races across Florida.