由于未出现明确的全国旗手，民主党在2026年中期选举初选（3月初至9月）中仍缺乏清晰领导，因此初选将首次成为判断党内哪一派占优的关键全国性信号。对2024年共同选举研究中19,000名民主党受访者的分析显示，在个体观点分散的情况下，统计分析仍分离出四个截然不同的选民群体。

进步派是最大阵营，占40%，也是年龄最小、受教育程度最高且最强调财富再分配的一组，有98%认同“白人特权”，约70%支持提高福利支出，这一数值至少比任何其他派系高25个百分点。建制派（中间党内主流）占29%，年龄更大，在经济议题上与进步派接近，但在安全问题上更保守：约90%主张增加边境巡逻，约75%反对削减警察经费；自力更生派占18%，最宗教化，只有60%认可白人特权，而支持堕胎权的比例为68%，明显低于其他群体。

孤立主义者最小，仅占13%，在国内议题上与进步派相近，却在外交上分化明显，有77%反对美国卷入乌克兰战争，82%反对介入加沙战争。该派别几乎完全由女性组成，拥有最高比例的黑人和西班牙裔支持者、最低的大学学历率，而且该党在2028年总统提名中最终胜出的候选人不可能赢得选举同时疏远在特朗普时代持续扩张的进步派。

The Democrats enter the 2026 midterm primaries (early March to September) without a clear national standard-bearer, making the contests the first major national signal of which faction is ascendant. An analysis of 19,000 Democratic respondents in the 2024 Co-operative Election Study finds that, despite idiosyncratic individual answers, four statistically distinct voter blocs emerge.

Progressives are the largest bloc at 40%; they are the youngest, most educated, and strongest believers in redistribution, with 98% accepting white privilege and about 70% favoring higher welfare spending, at least 25 points above every other faction. Establishment Democrats are 29% and older, with similar economic views but tougher public-safety preferences—about 90% want more border patrols and about 75% oppose cuts to police funding—while Bootstrap Democrats are 18%, the most religious, only 60% accept white privilege, and 68% support abortion rights, far below the other factions.

Isolationists are 13%; they resemble progressives on domestic policy but diverge sharply on foreign affairs, with 77% opposing U.S. involvement in Ukraine and 82% opposing involvement in Gaza. They are overwhelmingly female, have the highest share of Black and Hispanic supporters, and the lowest share of college graduates, and the eventual 2028 presidential nominee likely cannot win while alienating the Democratic progressive bloc that has swollen during the Trump era.

Source: Meet the four Democratic tribes

Subtitle: What 19,000 survey respondents reveal about rival factions on the left

Dateline: 4月 09, 2026 03:38 上午