Derrick Watchman, one of five commissioners on the Independent Redistricting Commission (IRC), said the northern Arizona tribes should continue to have a high percentage in the legislative district and enough to swing the vote in the congressional district if the proposed redistricting maps are approved.Derrick Watchman, one of five commissioners on the Independent Redistricting Commission (IRC), said the northern Arizona tribes should continue to have a high percentage in the legislative district and enough to swing the vote in the congressional district if the proposed redistricting maps are approved.