| 2007 NAICS | 2012 NAICS | 2017 NAICS | Corresponding Index Entries | |||
| 813940 | 813940 | 813940 | Campaign organizations, political | |||
| 813940 | 813940 | 813940 | Constituencies' associations, political party | |||
| 813940 | 813940 | 813940 | Local political organizations | |||
| 813940 | 813940 | 813940 | PACs (Political Action Committees) | |||
| 813940 | 813940 | 813940 | Political action committees (PACs) | |||
| 813940 | 813940 | 813940 | Political campaign organizations | |||
| 813940 | 813940 | 813940 | Political organizations or clubs | |||
| 813940 | 813940 | 813940 | Political parties |