referenda, the registration of voters, the administration of elections, and other matters with respect to election procedures shall be as provided by law. Section 3. Date of taking office. The Governor and Lieutenant Governor elected at a regular general election shall take office on the first Monday following the first Tuesday of January following the election. All other public officials elected at a regular general election shall take office on a date or dates set by law. Section 4. Oath or affirmation. No political or religious test, other than an oath or affirmation to support the Constitution and laws of the Virgin Islands and the Constitution and laws of the United States applicable to the Virgin Islands, shall be required as a qualification for public office. Section 5. Compensation. Elected public officials shall receive compensation as provided by law. ARTICLE IV. LEGISLATIVE BRANCH Section 1. Legislative power. The legislative power of the Virgin Islands is vested in a unicameral body designated the Senate, whose members shall be known as senators, and shall extend to all rightful subjects of legislation consistent with this Constitution and the Constitution and laws of the United States applicable to the Virgin Islands. This Constitution and laws of the Virgin Islands enacted under it shall be the supreme law of the Virgin Islands and any inconsistent local ordinance shall be void. Section 2. Composition of the Senate. The Senate shall consist of seventeen members. Four senators shall be elected at large by the qualified voters of the Virgin Islands, provided that two senators elected at large shall be bona fide residents of the legislative district of St. Croix and two senators elected at large shall be bona fide residents of the legislative district of St. Thomas. Thirteen senators shall be apportioned among and elected from the three separate legislative districts of St. Croix, St. John, and St. Thomas based on the distribution of resident citizens in the Virgin Islands, provided that a least one senator shall be elected from each district. Each senator elected at large shall serve for a term of four years, and each senator elected from a district shall serve for a term of two years. Section 3. Reapportionment. (a) At least once every ten years and within 120 days of publication of an official census that determines the number of resident citizens in the Virgin Islands, the Senate shall be reapportioned by law as required by changes in the distribution of resident citizens in the Virgin Islands. A reapportionment plan may not divide a legislative district and shall provide to the extent practicable for representation by each senator of approximately the same number of resident citizens, while ensuring representation for each island of the Virgin Islands.