Uninsured Rates by State vs. Competitive Races
| State | Uninsured Rate | Medicaid Expanded? | Competitive Race 2026 | Political Impact |
|---|---|---|---|---|
| Texas | 16.6% | No | Senate, multiple House seats | High — 4.8M uninsured Texans |
| Georgia | 11.6% | Partial | Senate (Ossoff), Governor | High — 1.2M uninsured Georgians |
| Florida | 10.2% | No | Senate (Scott) | High — 2.2M uninsured Floridians |
| North Carolina | 9.8% | Recently (2023) | Senate (Tillis) | Medium — expansion recent |
| Arizona | 9.4% | Yes | Senate, Governor (Hobbs) | Medium-High |
| Wisconsin | 5.8% | Yes | Senate (Baldwin) | Low-Medium — lower uninsured rate |
| Michigan | 5.5% | Yes | Senate (open) | Low-Medium — Medicaid expansion protective |
The Coverage Progress: ACA's Record Enrollment
The Affordable Care Act's 2025 open enrollment period produced record results: 21.3 million people selected marketplace plans, a 33% increase over 2022 enrollment. The growth was driven primarily by the enhanced premium tax credits enacted in the American Rescue Plan (2021) and extended by the Inflation Reduction Act (2022), which dramatically reduced out-of-pocket costs for marketplace coverage, particularly for people with incomes between 100% and 400% of the federal poverty level.
The coverage gains are real and measurable. The uninsured rate among working-age adults fell to a historic low of approximately 7.7% by 2024, a sharp improvement from the pre-ACA peak of approximately 18%. In Medicaid expansion states, low-income adults below 138% of the federal poverty level gained access to comprehensive coverage at no cost. This progress represents the cumulative effect of over a decade of ACA implementation, state-level Medicaid expansion decisions, and the enhanced subsidy policies passed in the Biden era.
The Threat: Medicaid Cuts and Subsidy Expiration
The current Republican congressional majority has proposed Medicaid cuts as part of broader budget reconciliation efforts to offset the cost of tax cut extensions. The specific mechanisms vary by proposal but include per-capita caps on federal Medicaid spending (which would shift financial risk to states and inevitably lead to coverage reductions), work requirements for Medicaid recipients that would cause administrative disenrollment of eligible people, and changes to the enhanced match rate for expansion states.
The Congressional Budget Office has scored various Republican Medicaid proposals as cutting between 8 and 17 million people from Medicaid coverage depending on the specific mechanism and phase-in timeline. When combined with the expiration of enhanced ACA marketplace subsidies — which would increase premiums for the 4 million people currently enrolled with low net premiums — the total coverage loss could exceed 10 million people. This is not a hypothetical: it represents the direct, projected consequence of legislation that has been actively moving through committee in 2025 and 2026.
The 2026 Electoral Calculation
Democrats' Weapon
Healthcare was the single most important issue in Democrats' 2018 House wave, which flipped 41 seats on the message of protecting pre-existing condition coverage. The 2026 environment offers a structurally similar opportunity: concrete, tangible coverage losses affecting real constituents in competitive districts. Democrats in every competitive race are building messaging around Medicaid cuts as the central health care threat.
Republicans' Defense
Republican candidates in competitive states face a difficult position on Medicaid cuts: they may have voted for budget reconciliation in the House or Senate, making them directly accountable for coverage changes. The standard defense — pointing to waste, fraud, and abuse in the Medicaid program — has limited traction when the CBO is projecting specific millions losing coverage. Republicans are counting on economic issues (inflation, tariffs, jobs) to dominate the 2026 environment over healthcare.
The 10 Non-Expansion States
Ten states still have not expanded Medicaid under the ACA, primarily in the Deep South and some Plains states: Texas, Florida, Georgia, Alabama, Mississippi, Tennessee, South Carolina, Wyoming, Kansas, and Wisconsin. In these states, there is a "coverage gap" of people who earn too little for marketplace subsidies but who do not qualify for traditional Medicaid. These individuals — estimated at 1.5 to 2 million people nationally — remain uninsured due to their state's political decision not to expand coverage.
