Conn. Gen. Stat. § 9-613

(b) Transfers or disbursements to political committee. A business entity may make reasonable and necessary transfers or disbursements to or for the benefit of a political committee established by such business entity, for the administration of, or solicitation of contributions to, such political committee. Nonmonetary contributions by a business entity which are incidental in nature and are directly attributable to the administration of such political committee shall be exempt from the reporting requirements of this chapter.

(c) Contributions or expenditures for referendum. The provisions of this section shall not preclude a business entity from making contributions or expenditures to promote the success or defeat of a referendum question.

(d) Contribution limits for particular offices. A political committee organized by a business entity shall not make a contribution or contributions to or for the benefit of any candidate's campaign for nomination at a primary or any candidate's campaign for election to the office of: (1) Governor, in excess of five thousand dollars; (2) Lieutenant Governor, Secretary of the State, Treasurer, Comptroller or Attorney General, in excess of three thousand dollars; (3) state senator, probate judge or chief executive officer of a town, city or borough, in excess of one thousand five hundred dollars; (4) state representative, in excess of seven hundred fifty dollars; or (5) any other office of a municipality not included in subdivision (3) of this subsection, in excess of three hundred seventy-five dollars. The limits imposed by this subsection shall apply separately to primaries and elections and contributions by any such committee to candidates designated in this subsection shall not exceed one hundred thousand dollars in the aggregate for any single election and primary preliminary thereto. Contributions to such committees shall also be subject to the provisions of section 9-618 in the case of committees formed for ongoing political activity or section 9-619 in the case of committees formed for a single election or primary.

(e) Contributions to political committees and party committees. No political committee organized by a business entity shall make a contribution or contributions to (1) a state central committee of a political party, in excess of seven thousand five hundred dollars in any calendar year, (2) a town committee of any political party, in excess of one thousand five hundred dollars in any calendar year, (3) an exploratory committee in excess of three hundred seventy-five dollars, or (4) any other kind of political committee, in excess of two thousand dollars in any calendar year.

(f) Contributions for candidate for State Treasurer. As used in this subsection, “investment services” means investment legal services, investment banking services, investment advisory services, underwriting services, financial advisory services or brokerage firm services. No political committee established by a firm which provides investment services and to which the State Treasurer pays compensation, expenses or fees or issues a contract shall make a contribution to, or solicit contributions on behalf of, an exploratory committee or candidate committee established by a candidate for nomination or election to the office of State Treasurer during the term of office of the State Treasurer who does business with such firm.

(g) Independent expenditures. Notwithstanding the provisions of this section, a corporation, cooperative association, limited partnership, professional association, limited liability company or limited liability partnership, whether formed in this state or any other, acting alone, may make independent expenditures.