LEGISLATIVE REAPPORTIONMENT AND REDISTRICTING ‑- USE OF UNITED STATES CENSUS TRACTS TO DEFINE BOUNDARIES 1. The state may be divided on a population basis into representative districts;  2. Two or more of these districts may be combined to form senatorial districts;  3. The boundaries of legislative districts may be defined by the use of United States census tracts or any other convenient method provided that such boundaries may be definitely ascertained.