Conn. Gen. Stat. § 9-620
Sec. 9-620. (Formerly Sec. 9-333v). Contributions made or received by committees formed to promote success or defeat of referendum questions.
(b) A political committee formed solely to aid or promote the success or defeat of a referendum question shall not receive contributions from a national committee or from a committee of a candidate for federal or out-of-state office.
(c) No person, other than an individual or a committee, shall make a contribution to a political committee formed solely to aid or promote the success or defeat of a referendum question, or to any other person, to aid or promote the success or defeat of a referendum question, in excess of ten cents for each individual residing in the state or political subdivision thereof in which such referendum question is to be voted upon, in accordance with the last federal decennial census.