Coroporations and organizations may not contribute directly to political campaign, but must contribute through a .

Coroporations and organizations may not contribute directly to political campaign is described below.

Explanation:

Corporations and organizations that are prohibited by federal law from making such contributions.These prohibited sources are:

Corporations, labor organizations, national banks

Campaigns may not accept contributions from the treasury funds of corporations, labor organizations or national banks. This prohibition applies to any incorporated organization, including a nonstock corporation, a trade association, an incorporated membership organization and an incorporated cooperative.

Professional corporations

Although law firms, doctors’ practices and similar businesses are often organized as partnerships, some of these businesses may instead be professional corporations. Unlike a partnership, a professional corporation is prohibited from making any contributions because contributions from corporations are unlawful.

Partnerships or LLCs with corporate partners or members

Partnerships or LLCs with foreign national members

Personal funds from a candidate employed by prohibited source

Churches and other charitable organizations

Federal government contractors

Partnerships or LLCs with federal government contracts

the answer here would be