(b) If the Senate fails to reapportion, the Supreme Court shall have original and exclusive jurisdiction to promulgate a reapportionment plan. (c) Any qualified voter of the Virgin Islands may petition the Supreme Court to review a reapportionment plan and to amend it to comply with the requirements of this Constitution. Section 4. Qualifications of senators. A senator shall be a United States citizen, a qualified voter of the Virgin Islands for at least three years, at least twenty- one years of age, a bona fide resident of the Virgin Islands for at least five years immediately preceding the date of taking office, and, if a district senator, a bona fide resident of the legislative district from which elected for at least two years immediately preceding the date of taking office. Section 5. Compensation. No law which increases the compensation of senators shall take effect during the term of the Senate which enacts the law. Section 6. Restrictions on activities. A senator may not hold any other public position while in office. Within one year of ceasing to serve in the Senate, a senator who resigns or declines to run for re-election may not be appointed to any public position which was created or the compensation of which was increased during that senator's last term of office. Section 7. Vacancies. If one year or more remains in the unexpired term of office when a vacancy in the Senate occurs, the vacancy shall be filled by special election within sixty days. If less than one year remains in the unexpired term of office when a vacancy occurs, it shall be filled by gubernatorial appointment of the next available person from among those candidates for the vacant seat who were not elected at the most recent election for the seat, considered in order of the highest number of votes received. Section 8. Legislative immunity. A senator may not be held to answer before any tribunal except the Senate for a statement made in any Senate proceeding. A senator shall, except in cases of treason, felony, or breach of the peace, be privileged from arrest during attendance at a session of the Senate and in going to and returning from the same. Section 9. Organization and procedure. A majority of the members of the Senate shall constitute a quorum. The Senate shall have all the authority inherent in a legislative assembly; shall be the sole judge of the election and qualifications of its members; and shall have the power to institute and conduct investigations, issue subpoenas, and administer oaths. The Senate, upon the affirmative vote of three- fourths of its members, may discipline any member for cause. The Senate shall keep a daily journal of its proceedings which includes a record of all votes and which shall be published within thirty days.