(a) The provisions of this article regarding loans apply to extensions of credit, but do not apply to loans made to a candidate by a commercial lending institution in the lender’s regular course of business on terms available to members of the general public for which the candidate is personally liable.
(b) Notwithstanding subdivision (a), a candidate for elective state office may not personally loan to his or her campaign, including the proceeds of a loan obtained by the candidate from a commercial lending institution, an amount, the outstanding balance of which exceeds one hundred thousand dollars ($100,000). A candidate may not charge interest on any loan he or she made to his or her campaign.