elected at-large) must reside in their constituent district at least one year prior to their election. Sessions The following is a list of legislative assemblies, with a count starting on the legislature elected in the 1948 Puerto Rican general election, following the enactment of the Puerto Rico Elective Governor Act of 1947 by president Harry S. Truman. Moves to unicameralism Act No. 477 of September 23, 2004 provided for a referendum to be held on July 10, 2005, in which Puerto Rican voters were to indicate if they favored changing the Legislative Assembly to a single house, or maintain the bicameral legislature established by the 1917 Jones Act, which had been retained (with modifications) by the 1952 Constitution of the Commonwealth of Puerto Rico. A vote for unicameralism would constitute a mandate for the Legislative Assembly to hold a second referendum on July 9, 2007 on the constitutional amendment that would establish a unicameral legislature by 2009. In the unicameral referendum held on July 10, 2005, Puerto Rican voters approved a mandate for the Legislative Assembly to hold a second referendum on the constitutional amendment that would establish unicameral legislature by 456,267 votes in favor, versus 88,720 against; voter turnout was only 22.6%, the lowest turnout figure in Puerto Rico's electoral history, vastly below the 81.7% that had gone to the polls just a few months earlier for the general election. Another referendum was scheduled for July 2007 to approve the specific amendments to the Constitution of Puerto Rico that are required for the change. However, the Supreme Court of Puerto Rico ruled in June that it could not force the Legislative Assembly to initiate a constitutional amendment process to become a single chamber legislature. Further moves to unicameralism have been tabled. Agencies Agencies of the legislative branch include: Commission on Civil Rights Comptroller Office of Legislative Services Ombudsman Superintendency of the Capitol Notes References External links House of Representatives of Puerto Rico Senate of Puerto Rico Elected Senators 1917 Senatorial Districts 1917-2011 Legislative branch of the government of Puerto Rico Puerto Rico Puerto Rico