Polarization and Congressional Demographics
Over four-fifths of House Republicans represent districts where the white share of the population exceeds the national average; over two-thirds of House Democrats represent districts where the non-white share of the population exceeds the national average.
Nearly three-fourths of House Republicans represent districts where the share of white adults with a college degree lags below the national average; nearly two-thirds of House Democrats represent districts where the share of whites with a college degree exceeds the national average.
Almost three-fifths of House Republicans represent districts where the median age is older than the national average; almost exactly the same proportion of Democrats represent districts where the median age is lower than the national average.
Likewise, almost exactly three-fifths of Republicans represent districts with more seniors than the national average, while fully two-thirds of Democrats hold districts with a smaller-than-average share of seniors.
