(1) An elected official, who is a member of either the judges' or sheriffs' retirement systems due to the elected office he holds, is eligible for an involuntary retirement allowance only when he runs for and loses an election which would have continued him in a covered office, provided the requisite number of years of total service have been performed.

(2) If an elected official chooses not to run, runs for another office which is not covered by that retirement system, or is otherwise removed from office for cause, he shall not be eligible for an involuntary retirement allowance.

(3) A member of the sheriffs' retirement system who does not hold elected office is eligible for an involuntary retirement allowance only upon termination from active duty due to a reduction in force.