29 C.F.R. § 102.76
When picketing of an employer has been conducted for an object proscribed by Section 8(b)(7) of the Act, a petition for the determination of a question concerning representation of the employees of such employer may be filed in accordance with the provisions of §§ 102.60 and 102.61 , insofar as applicable, except that if a charge under § 102.73 has been filed against the labor organization on whose behalf picketing has been conducted, the petition will not be required to contain a statement that the employer declines to recognize the petitioner as the representative within the meaning of Section 9(a) of the Act; or that the union represents a substantial number of employees; or that the labor organization is currently recognized but desires certification under the Act; or that the individuals or labor organizations who have been certified or are currently recognized by the employer are no longer the representative; or, if the petitioner is an employer, that one or more individuals or labor organizations have presented to the petitioner a claim to be recognized as the exclusive representative of the employees in the unit claimed to be appropriate.
29 C.F.R. §102.76