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What the explosive growth of ‘blowout counties’ means for U.S. politics

Some of the most important political coalitions for Democrats emerge on this map, especially in comparison with 2000. The 2024 map shows the birth of Democratic vote powerhouses in majority-Black DeKalb and Clayton counties in Georgia and in Wisconsin’s Dane County, home of Madison and the University of Wisconsin, with its heavily white and college degree-holding population. Both coalitions are essential to Democratic wins in those states in recent elections.