(a) If the director receives a complaint regarding the eligibility of a candidate for a particular office, the director shall determine eligibility under regulations adopted by the director. The director shall determine the eligibility of the candidate within 30 days of the receipt of the complaint.
(b) Except as provided in (c) of this section, the director shall determine the eligibility of the candidate by a preponderance of the evidence.
(c) If a candidate for the legislature has been registered to vote at any time during the 12 months preceding the filing of the declaration of candidacy in a district other than the district in which the declaration of candidacy has been filed, the director may not determine that a candidate is eligible except under a standard of clear and convincing evidence.
(d) A person may not be a resident of two districts at the same time.