KFF designs, conducts and analyzes original public opinion and survey research on Americans’ attitudes, knowledge, and experiences with the health care system to help amplify the public’s voice in major national debates.
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 (ACA) 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.
This ACA Marketplace enrollment map shows that 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 that were all won by President Trump in 2024.
This new interactive map illustrates Medicaid enrollment by congressional district and eligibility group. In half of Republican congressional districts, at least 20% of residents are enrolled in Medicaid, and in half of Democratic districts, at least 25% are enrolled.
During this virtual event, KFF public opinion and survey experts provided analysis and insights on the latest findings from recent public opinion surveys about health care issues in advance of the midterms, including current public sentiment about Medicare-for-All and how it compares historically.
This chart pack summarizes KFF polling data on public opinion on Medicare-for-all and other national health plan proposals. The latest update finds that two-thirds of the public supports Medicare-for-all, while support changes drastically as respondents hear arguments from proponents and critics.
As the 2026 midterms approach, health care costs remain tied with gas as voters’ top midterm concerns and the Democrats hold a clear edge over the Republicans Party on who voters trust to handle many top electoral issues, including the cost of health care and the cost of living.
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.
Major federal changes to Medicaid eligibility and financing from the 2025 reconciliation law are coming, including new work requirements that will affect millions of Medicaid enrollees.
Federal vaccine policy has shifted toward fewer recommended routine childhood vaccinations, more emphasis on individual decision-making, and greater skepticism about the safety and efficacy of some vaccines.
As health care costs dominate the national political conversation, our 2026 KFF Women’s Health Survey shows the toll those costs are taking on women. Our new nationally representative survey of women and men ages 18–64 finds costs remain a major barrier for women, specifically — causing everything from delayed care to rationed medications to cuts in spending on basic needs.
This issue brief reviews the abortion-related initiatives currently slated to be on the ballot in November 2026 and examines how these measures may impact abortion access in several states.
Health care affordability is a top issue for many people. Why and how did care get so expensive? In this three-part video series, KFF experts look at the rising cost of health care in the U.S. from the macro level to the issues facing everyday Americans. Drawing on KFF policy analysis and polling, the videos examine the underlying drivers of health care spending, the true cost of employer sponsored health insurance and whether the Affordable Care Act has delivered on its promise. View the videos
Political leaders on both sides point fingers at health insurers for high costs and patient frustrations. How much blame do insurers, in fact, deserve for our health system’s problems? This three-part video series from KFF considers this question and the complicated answer, exploring what’s driving rising insurance premiums, whether insurers provide value, and who we trust to decide what gets covered and at what price. Watch and share →
This brief describes current fiscal conditions using the latest state revenue and spending data from the National Association of State Budget Officers (NASBO) and analyzes how these conditions may impact states’ Medicaid budget decisions going forward.
Political leaders on both sides point fingers at health insurers for high costs and patient frustrations. How much blame do insurers, in fact, deserve for our health system’s problems? In this three-part video series, KFF’s Larry Levitt considers this question and the complicated answer, exploring what’s driving rising insurance premiums, whether insurers provide value, and who we trust to decide what gets covered and at what price.
Costly health insurance premiums are straining employers and consumers alike. But, it’s underlying health care spending, especially for hospital care, that’s driving costs. KFF’s Larry Levitt looks at how hospital consolidation and employer demands for broad networks affect insurers’ ability, and willingness, to control prices in this first video of a three-part series on health insurers and rising health care costs.
Insurers take a cut of every premium dollar for overhead and profit. The question isn't just whether they profit, but also whether we’re getting value in return. KFF’s Larry Levitt breaks down how much goes to administrative costs and profit and how that varies across private insurance markets and Medicare, and considers what a Medicare-for-all system, which would be operated by the government, would address and what might be left unresolved in this second video…
Deciding what health care gets covered largely falls to health insurers, and it’s not a role that wins them many fans. A KFF poll finds prior authorization is the single biggest burden insured adults say they face beyond cost.
ACA Marketplaces insurers are proposing a median premium increase of 15% in 2027, according to KFF's updated analysis of 276 insurers with publicly available filings across all 50 states and the District of Columbia.
Amid an ongoing FDA re-review of mifepristone, awareness of the safety and prevalence of the abortion pill remains limited. This KFF poll also finds that the voters who say abortion policy is an important issue for 2026 midterm candidates to discuss are disproportionately Democrats.
In a new column, Dr. Drew Altman, Founding President and CEO, analyzes the polling on health costs as a voting issue and concludes that there is no one top voting issue. He writes: “I have come to the conclusion that the search for a single top issue through polling questions—whether it’s health costs, or gas prices, or the cost of food—is artificial. People worry about and experience these costs together. There is no top issue,…
Following several years of rapid enrollment growth in the Affordable Care Act (ACA) Marketplaces that corresponded with temporary enhanced premium tax credits, enrollment fell for the first time in seven years in 2026, when those tax credits expired. Every state except for New Mexico saw a drop in ACA Marketplace enrollment from 2025 to 2026. State-based Marketplaces that run their own enrollment platforms, including those that partially offset the expiring federal enhanced tax credits, generally…