Cal. Rev. & Tax. Code § 24434
(b)
(1) For purposes of subdivision (a), the term “political party” means any of the following:
(c) In the case of a taxpayer who uses an accrual method of accounting, subdivision (a) shall not apply to a debt which accrued as a receivable on a bona fide sale of goods or services in the ordinary course of a taxpayer’s trade or business if both of the following apply: