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POLLING

Tracking the Public’s Views on the ACA

While overall opinion of the Affordable Care Act has been more favorable than unfavorable since 2017, there remain deep partisan divides. See how public opinion on the ACA has changed from the inception of the law to the present. This interactive tool highlights key moments when views shifted and trends based on party identification, income, age, gender, and race/ethnicity.
DATA

Marketplace Enrollment is Down in 2026—But All of the Data Isn’t in Yet

ANALYSIS

Higher Premium Payments or Higher Deductibles: The ACA's Tradeoffs

QUIZ

Test Your Knowledge of the Affordable Care Act

ANALYSIS

Competition Increased in Individual Market But Fell in Fully Insured Group Markets

Enhanced Premium tax credits

2025 KFF Marketplace Enrollees Survey

If their premium payments double, about one in three ACA enrollees say they would be “very likely” to look for a lower-premium Marketplace plan.

Timely insights and analysis from KFF staff

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  • KFF Health Tracking Poll – April 2019: Surprise Medical Bills and Public’s View of the Supreme Court and Continuing Protections for People With Pre-Existing Conditions

    Feature

    The April 2019 KFF Health Tracking Poll examines the public’s position on the future of ACA and its protections for people with pre-existing medical conditions, in light of the ongoing legal battle which may end up in the Supreme Court. With lawmakers proposing legislation to address surprise medical bills, this month’s survey also measures the public’s support for federal government action to protect patients from having to pay the cost incurred from an inadvertent out-of-network provider.

  • Enrollment Growth in the ACA Marketplaces

    Policy Watch

    This analysis of enrollment in Affordable Care Act (ACA) Marketplace health plans finds a record 24.3 million people enrolled in 2025, more than double the total in 2020, with most of the growth occurring in states won by President Trump in the 2024 election. In six states, enrollment more than tripled from 2020 to 2025: Texas, Mississippi, West Virginia, Louisiana, Georgia, and Tennessee.

  • Pulling it Together: The Media’s Challenge In Health Reform

    Perspective

    For many years now the news media has served as the public's number one source of information on important issues like health reform. People rely on the news media to help them wade through claims and counter claims, understand how policy options will affect them and come to judgment on complex issues.

  • Health Care in the 2008 Presidential Primaries

    Poll Finding

    This analysis find that the sharply contrasting health care platforms of the leading Democratic and Republican presidential candidates reflect dramatic differences in the perspectives of their primary voters.

  • Healthy San Francisco

    Fact Sheet

    In 2007, San Francisco became the first city in the nation to begin implementation of a plan to provide health care services to all uninsured residents. Healthy San Francisco is not health insurance, but rather it provides access to affordable basic and ongoing health care services for uninsured residents.

  • Approaches to Covering the Uninsured: A Guide

    Issue Brief

    The guide explains the key strategies for expanding coverage to the nation's 45 million uninsured people and explains and how different policy options can be combined to form comprehensive reform proposals.

  • The Coverage and Cost Impacts of Expanding Medicaid

    Report

    This paper quantifies the impacts on coverage and cost of expanding Medicaid to cover more of the low-income uninsured, including adults, at various income levels and with improved participation rates.