This prohibition also applies to a participating candidate or certified candidate in a special election, except that the prohibition begins on the date of the candidate's nomination. This subsection does not prohibit a participating candidate or certified candidate, including a certified candidate who wins a general or special election, from engaging in fund-raising or decision making for a party caucus political action committee, a ballot question committee or a political action committee formed for the purpose of promoting or opposing a ballot question. This prohibition applies to a participating candidate or certified candidate regardless of the date on which the political action committee was established.