The Maine Single-Member Legislative Districts and Apportionment Commission Referendum, also known as Proposed Constitutional Amendment No. 1, was on the November 4, 1975 ballot in Maine as a legislatively-referred constitutional amendment, where it was approved. The measure provided for single member districts for the House of Representatives, provided for the apportionment of the House and Senate and established an apportionment commission. The legisalture was to divide the multi-member districts of the House and Senate into districts for the choice of representative per district following the passage of this measure and to redo this process every 10 years.
| Maine Proposed Constitutional Amendment No. 1 (1975)|
| Yes|| 94,773|| 67.66%|
Election results via: Maine State Law and Legislative Reference Library, Proposed Constitutional Amendments 1820-
Text of measure
The language appeared on the ballot as:
PROPOSED CONSTITUTIONAL AMENDMENT NO. 1
"Shall the Constitution be amended as proposed by a resolution of the Legislature to provide for single member districts for the House of Representatives, to provide for apportionment of the House and Senate and to establish and apportionment commission to plan for all apportionments of the House and Senate?"