Here are a few of the non-profit organizations and campaigns who have used Popvox:

• California Nurses Association
• Casa of Maryland
• Citizen Services, Inc.
• Connecticut Citizens Action Group
• Connecticut SEIU 1199
• John Hall for Congress (NY)
• Ned Lamont for Senate (CT)
• O'Malley Brown for MD (Governor)
• Peter Bielenson for Congress (MD)
• SEIU Maryland/DC
• Shelley Mayer for State Assembly (NY)
• US Action campaigns involving many local organizations