will make partisanship in the house even worse. >> you have so many seats that are extreme in one direction or another. that means people are no longer forced to work together. >> reporter: more on that in a bit, but first a primer. the constitution says that every ten years after the census state political maps are redrawn based on population changes. in recent decades, state legislatures in both parties have taken to jegerrymandering congressional district. >> redistricting is simply the process of redrawing the lines. gerrymandering is redrawing the lines with the intent to benefit a particular party or group or individual. >> reporter: look at the map that texas republican legislature passed after the 2020 census. even the untrained political eye can see how jumbled and jagged the new house districts will be. >> when you look at the new texas map after redistricting,