Two variables at once. Pick any variable for the X axis and any for the Y axis; each county is coloured by BOTH — read the 3×3 key. Colour shifts one way as X rises, another as Y rises, so the corners pop: high-X-low-Y, high-both, and so on. Defaults to CVAP diversity × 2020 lean. An ecological comparison of places, not a claim about individuals.
Each axis is split into equal-count thirds (terciles) computed from the counties that have both values. Elections: RDH precinct returns aggregated to county, 2020 presidential. Population/CVAP: Census (ACS + CVAP special tab). A comparison of places, not a claim about individuals.
Values: /api/fec/geo/county/analyze/ · geometry: /api/fec/geo/county/geojson/