Which political process is necessary for redistricting?

Redistricting is the process of drawing electoral district boundaries in the United States.

The state legislature has primary responsibility for creating a redistricting plan, in many cases subject to approval by the state governor.

Redistricting has to follow certain criteria to be accepted:

* compactness
* contiguity
* equal population
* preservation of existing political communities
* partisan fairness
* racial fairness

The practice of gerrymandering involves the manipulation of district drawing in aims to leave out, or include, specific populations in a legislator's district to ensure his/her reelection.

Gerrymandering is the practice of drawing district lines to achieve political gain for legislators.