Redistricting is the regular process of adjusting the lines of voting districts in accordance with population shifts. In California, public agencies and other organizations must redivide (or redraw) the lines of their districts every ten years once the results of the Census are released so that each district is substantially equal in population. This ensures that each elected official represents about the same number of constituents.
All district lines must be reviewed to meet strict requirements for population equality, voting rights protections, and in accordance with the California FAIR MAPS Act. With the California Voting Rights Act, more than 500 jurisdictions in California must redistrict in 2021-2022.