Synopsis As Introduced Proposes to amend the Legislature Article of the Illinois Constitution. Removes the requirement for each Legislative District to be divided into two Representative Districts. Modifies provisions concerning legislative redistricting. Provides specified requirements for each Legislative District, Representative District, and Congressional District for redistricting purposes. Replaces the current method of legislative redistricting with the following: a sixteen-member commission, appointed by the Chief Justice of the Supreme Court and the most senior Supreme Court Justice of a different political party in accordance with specified criteria, shall adopt and file with the Secretary of State redistricting plans for Legislative, Representative, and Congressional Districts following a series of public hearings by August 1 of the year following a federal decennial census; permits the public to submit maps during the map drawing process for consideration by the Commission; and, if a redistricting plan is not adopted by August 1 of the year following a federal decennial census, then a seventeenth member shall be appointed to the Commission and redistricting plans shall be filed by September 1. Adds provisions concerning the membership of the Commission and budgetary matters related to the Commission. Effective upon being declared adopted and applicable to redistricting beginning in 2021 and to the election of General Assembly members beginning in 2022.