campaign finance reformnoun [ U ]
uk/kæmˌpeɪn ˈfaɪ.næns rɪˌfɔːm//kæmˌpeɪn ˈfaɪ.næns rɪˌfɔːrm/USefforts to change the rules on how political campaigns can be paid for, with the aim of making them fairer:
The public strongly supports campaign finance reform, largely to cap contributions from special interest groups like Big Tobacco.