About Redistricting Also known as delimitation and reapportionment, redistricting followed each decennial census since the formative days of the republic. As surely as the sun rises in the East, the state political party in power will redraw state and congressional political lines in a way that favors its members.
Every state redraws the district lines for congressional seats, as well as state seats.
Depending on the political compositions of the Legislature and the governor, you can have all kinds of political considerations brought to bear. See news on reapportionment.