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By Thomas B. Edsall

Mr. Edsall contributes a weekly column from Washington, D.C., on politics, demographics and inequality.

There have been endless laments for the white working-class voters the Democratic Party lost over the past few decades, particularly during the 10 years of the Trump era. But detailed 2024 election analysis also makes it clear that upper-income white voters have become a much more powerful force in the party than they ever were before. These upscale white voters are driving the transformation of the Democratic Party away from its role as the representative of working-class America and closer to its nascent incarnation as the party of the well-to-do.

A detailed analysis of data compiled by the Cooperative Election Study shows that in 2024, 46.8 percent of white Kamala Harris voters had annual household incomes over $80,000, while 53.2 earned less than that. In fact, according to data analysis by Caroline Soler, a research analyst for the Cooperative Election Study, the single largest bloc of white Democratic voters in 2024 — 27.5 percent — had incomes of $120,000 or more.