Beginning in 1986 and thereafter, the five members of the Henry County Commission shall be elected from single member districts within Henry County, as hereinafter defined. Those county commissioners seeking to serve Districts No. 2, No. 3, and No. 4 shall run and be elected from their respective districts in 1986, and shall serve four-year terms. Those county commissioners seeking to serve Districts No. 1 and No. 5 shall run and be elected from their respective districts in 1988 and shall likewise serve four-year terms. The term of office of each commissioner, when elected, shall officially begin on the first Monday after the second Tuesday in January, following the election.