Democratic socialists narrowly won in Michigan but lost in Wisconsin, revealing that the progressive left can now compete in battleground states—but faces strict demographic limits. Young voters overwhelmingly back these candidates while older, wealthier, and Black voters support moderates, suggesting the movement is gaining ground but fundamentally reshaping rather than broadening its coalition. Young voters support progressive left candidates by 60-80% margins, while older voters consistently back establishment moderates, reflecting a generational divide within the Democratic Party.