Redistricting in the United States is the process of drawing electoral district boundaries. A congressional act enacted in 1967 requires that representatives be elected from single-member districts, except when a state has a single representative, in which case one state-wide at-large election be held.
Why is it important? How and where districts are drawn can shape communities' ability to elect the representatives of their choice. Districts must be made as equal in population as practicable so that communities have equal access to political representation.