(D) Notwithstanding any other provision of this constitution or of law to the contrary, statewide elected officials and members of the legislature elected in 1987 shall hold office from and after the second Monday in March, 1988. These statewide elected officials and any successor elected to the unexpired term of any of them shall serve for terms which shall expire at noon on January 13, 1992. These members of the legislature and any successor elected to the unexpired term of any of them shall serve for terms which shall expire at ten o'clock a.m. on January 13, 1992. Thereafter, statewide elected officials and members of the legislature shall be elected for terms of four years. For purposes of retirement, the statewide elected officials and members of the legislature elected in 1987 shall be deemed to be elected for a four-year term.