医疗保健问题正再度成为威胁共和党选情的关键痛点。根据凯撒家庭基金会（KFF）7月的民调，美国人对医疗负担的焦虑超过了对汽油、住房或食品的担忧；盖洛普3月的调查同样显示，61%的美国人极度担忧医疗服务的可及性与可负担性，这一比例显著超过对整体经济或通胀的关切。与2018年中期选举时捍卫《平价医疗法案》（ACA）的情形不同，当前共和党对医保交易所补贴及针对低收入群体的联邦医疗补助（Medicaid）的大幅削减，已导致该体系逐步瓦解。
除了政策削减外，医疗体系还承受着广泛的通胀压力。在新型昂贵肥胖与癌症疗法以及医院广泛采用AI计费优化工具的推波助澜下，2026年医疗保险价格创下15年来的最快涨幅；咨询机构达信（Marsh）预测，依赖雇主提供医保的半数美国人口在2027年还将面临平均8%的保费飙升。为此，民主党自今年1月以来已在国会关键选战中斥资9300万美元投放以医疗为主题的竞选广告，支出规模远超其他议题，以此猛烈抨击共和党推高医疗成本的投票记录。
尽管共和党试图将削减开支粉饰为打击欺诈与浪费，特朗普也在9月宣布向前医保补贴获取者发放500美元“退款”，但并未惠及已放弃参保的300万人，因而难以平息选民不满。《纽约时报》与锡耶纳学院民调显示，60%的选民在医疗议题上信任民主党；库克政治报告亦发现摇摆选区56%的选民更担心福利遭削减。尽管民主党内部在推行全民医保（Medicare for All）还是渐进式修复ACA之间存在分歧，但他们正将医疗成本危机作为在11月中期选举中克敌制胜的核心王牌。
Health care has once again emerged as a central electoral vulnerability for Republicans ahead of the midterm elections. According to a July poll by KFF, more Americans expressed anxiety over paying for health care than for petrol, housing, or groceries, while a March Gallup survey found that 61% of Americans worried a great deal about health-care availability and affordability, surpassing concerns about the wider economy and inflation. Unlike during the 2018 midterms when Democrats mobilised to protect the Affordable Care Act (ACA), the law is currently unravelling following Republican cuts to federal insurance exchange subsidies and the Medicaid program for low-income citizens.
Systemic cost pressures have intensified alongside legislative retrenchment. Insurance premiums rose at their fastest pace in 15 years in 2026, propelled by expensive breakthrough treatments for cancer and obesity alongside AI-driven billing software deployed by hospital networks to maximise charges. As notices arrive for the half of the population insured through employers, consultancy Marsh projects that employer-sponsored premiums will surge by an average of 8% for 2027. Seizing on this economic strain, Democrats have poured $93m into health-care campaign advertisements across competitive congressional districts since January, making it their most heavily funded campaign theme.
Republican efforts to reframe Medicaid retrenchment as combating welfare fraud have failed to sway the electorate, and Donald Trump's September pledge of $500 "refunds" to nearly 1m citizens dropped from exchange subsidies leaves 3m former participants who lost coverage entirely unassisted. A New York Times/Siena College poll indicates that 60% of voters trust Democrats on health care, while Cook Political Report data reveals that 56% of swing-district voters fear benefit reductions far more than fraud or waste. Even as internal progressive and moderate debates simmer over single-payer versus incremental ACA repairs, Democrats are counting on soaring medical bills to secure a November victory.
Source: What’s even more politically toxic than high prices at the pump?
Subtitle: The soaring cost of health care is a problem for Republicans
Dateline: Oct 1st 2026\n