(a) In this section "expected total political contributions maintained" for a report subject to review is the total amount of political contributions maintained disclosed on the previous report and all monetary political contributions, loans, and credits, less all expenditures from political contributions disclosed on the report that is subject to review, excluding the purchase of investments that can be readily converted to cash.(b) When there is a difference greater than the threshold set by §20.50(c) of this title (relating to Total Political Contributions Maintained) between the total amount of political contributions maintained disclosed in a report and the expected total political contributions maintained, the commission may request from the filer the bank statement showing the balance as of the last day of the reporting period for each account in which political contributions are maintained.(c) Producing the requested bank statements that show the total amount of political contributions was accurately reported in the report that is subject to review is sufficient to end the review of the total amount of political contributions maintained as disclosed in the report.