(d) The transfer of funds by a campaign treasurer or deputy campaign treasurer between a primary depository and a separate interest-bearing account or certificate of deposit, and the term includes interest earned on such account or certificate.
Notwithstanding the foregoing meanings of "contribution," the term may not be construed to include services, including, but not limited to, legal and accounting services, provided without compensation by individuals volunteering a portion or all of their time on behalf of a candidate or political committee or editorial endorsements.