Synopsis As Introduced Proposes to amend the Legislature Article of the Illinois Constitution. Changes the number of Representative Districts from 118 to 119. Provides that the boundaries of Legislative and Representative Districts may be separate. Replaces the current method of redistricting of the Senate and House of Representatives with the following: a Legislative Redistricting Commission, appointed by the legislative leaders and in accordance with scoring criteria provided by law, shall evaluate separate Legislative District and Representative District maps submitted by the public; the Commission shall use specified formulas to determine quotas and split and compactness scores that are used to evaluate maps; the Commission shall follow a multi-step process that includes (1) voting to eliminate maps that do not comply with the law, (2) ranking and eliminating maps based on split scores, (3) ranking maps based on calculations of compactness, (4) voting to eliminate maps that are substantially the same but of equal or greater number rank, and (5) ranking the remaining maps; the Senate and House, each by a three-fifths vote, may adopt one of the 3 best-ranked maps; and the Secretary of State shall certify the map with the best rank if a chamber fails to adopt a map. Specifies the schedule for redistricting activities. Effective upon being declared adopted and applicable to redistricting beginning in 2021 and to the election of General Assembly members beginning in 2022.