This ACA Marketplace enrollment map shows more than half of Marketplace enrollees (55%) live in Republican districts. The highest shares of state enrollment are in Florida (16%), Georgia (11%), Texas (10%), and Utah (10%) — states all won by President Trump in 2024.
Mapping ACA Marketplace and Medicaid Enrollment by Congressional District
With an estimated 14 million people expected to become uninsured by 2034 due to major changes to Medicaid and the Affordable Care Act Marketplaces in the 2025 reconciliation law plus the expiration of the ACA’s enhanced premium tax credits, KFF’s new interactive maps provide a way to view ACA Marketplace and Medicaid enrollment by congressional district across the U.S.
health in the 2026 Midterms
Poll: Cost of Health Care and Gas Top Voters’ Midterm Concerns; Democrats Hold Significant Advantage on Health Care Costs, Cost of Living
Health care costs are tied with gas as voters’ top economic concern, and voters trust Democrats more than Republicans on key issues, including health care costs and the cost of living. Meanwhile, support for Medicare-for-All has reached a new high in KFF polling — though views shift significantly when competing claims from critics and proponents are heard.
Health in the 2026 Midterm Elections
See the latest from our round-up of policy research, polling and news from across KFF about election-related health care issues.
Midterm Election Update: ACA Marketplaces
More people than ever got coverage through the Affordable Care Act Marketplaces in 2025, but the expiration of enhanced premium tax credits has driven up what people pay and contributed to declining enrollment in 2026. Law and regulatory changes also tightened ACA eligibility and enrollment requirements. Public opinion of the ACA remains generally favorable, although views remain divided along partisan lines.
new and noteworthy
medicare open enrollment
Medicare Open Enrollment and Coverage Options: Key Questions and Answers
Each year, Medicare beneficiaries have an opportunity to make changes to how they receive their Medicare coverage during the nearly 8-week annual open enrollment period. This brief answers key questions about the Medicare open enrollment period and Medicare coverage options.
Women's Health survey
KFF 2026 Women’s Health Survey
For more than two decades, the KFF Women’s Health Survey has provided a nationally representative look at women’s experiences with health care in the United States. Explore the latest findings →
Women’s Experiences with and Attitudes Towards Family Support Policies
This analysis highlights women’s opinions regarding the possible impact of potential federal actions on their decision to have children in the future as well their experiences with paid parental leave and sick leave in the workplace.
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