As Texas congressional districts go, the 21st is pretty easy to parse. The outline of it, which dips into Austin and enfolds a vast swath of the San Antonio suburbs, looks like a lumpier-than-average flightless bird, or a small-headed figure wearing a cape in a windstorm. It is rich and Republican by design and has been represented by Rep. Chip Roy since 2019. Roy was born and raised around suburban D.C. and got two degrees from the University of Virginia. After a brief career in investment b...
