evidence: Bernie Sanders - Budget - Energy and Natural Resources - Environment and Public Works - Health, Education, Labor and Pensions, Chairman - Veterans' Affairs [...] Corporations themselves cannot donate to candidates at the federal level but federal candidates can get contributions from corporate PACs, employees and owners as well as their immediate families. At the state level, corporations and unions can give directly to campaigns in many jurisdictions. [...] Showing these clusters of contributions from people associated with particular organizations provides a valuable — and unique — way of understanding where candidates are getting their financial support. Knowing those groups is also useful after the election, as issues come before Congress, presidential administrations and state governments that may affect those organizations or their industries.