Service Employees International Union, Afl-Cio, Clc California State Council of Service Employees/cope California Teachers Association California Teachers Association for Better Citizenship Political Action Committee Committee to Protect the Political Rights of Minorities Willie L. Brown Willie L. Brown Campaign Committee Friends of David Roberti Friends of John Burton John Burton Alice Huffman Michael Ross Allen Ruby v. Fair Political Practices Commission, and Quentin L. Kopp Ross Johnson, Defendants-Intervenors-Appellants. Service Employees International Union, Afl-Cio, Clc California State Council of Service Employees/cope California Teachers Association California Teachers Association for Better Citizenship Political Action Committee Committee to Protect the Political Rights of Minorities Willie L. Brown Willie L. Brown Campaign Committee Friends of David Roberti Friends of John Burton John Burton Alice Huffman Michael Ross Allen Ruby, California Democratic Party, an Incorporated Association, in Intervention-Appellee v. Quentin L. Kopp Ross Johnson, Defendants-Intervenors-Appellants, and Fair Political Practices Commission, Defendant-Intervenor. Service Employees International Union, Afl-Cio, Clc California State Council of Service Employees/cope California Teachers Association California Teachers Association for Better Citizenship Political Action Committee Committee to Protect the Political Rights of Minorities Willie L. Brown Willie L. Brown Campaign Committee Friends of David Roberti Friends of John Burton John Burton Alice Huffman Michael Ross Allen Ruby, California Democratic Party, an Incorporated Association, Plaintiff-Intervenor-Appellee v. Fair Political Practices Commission, and Quentin L. Kopp Ross Johnson, Defendants-Intervenors