Section 42C. The state auditor shall conduct a post-audit of all accounts and transactions involving the state election campaign fund for any year in which elections are held for statewide elective office and shall conduct such other special audits and post-audits as he may deem necessary. The state auditor shall publish a report of any post-audit required by this section on or before April 1 of the year following any year in which elections are held for statewide elective office. The comptroller shall conduct a post-audit of the accounts and transaction of any candidate for state auditor.