Why do we redistrict?
Every ten years, following the national Census (Census Day 2010 is on April 1), state legislative and congressional district boundaries must be redrawn to reflect the nation’s growing and shifting population. The process of redrawing the districts from which our political representatives are elected is called redistricting. The guiding principle for all redistricting efforts--at the national, state and local levels—is "one person, one vote." That is, districts must have roughly equal population so that no one person's vote counts more than another person's vote.
