Firms that join must disclose their public polls' full question wordings and preambles, sample sizes, and how responses were collected and weighted.
[4] Other firms to have since joined include 89 Degrees East, The Australia Institute, Pyxis Polling & Insights, Redbridge and SEC Newgate.
Resolve Strategic, which polls for the major newspapers The Age and The Sydney Morning Herald, is a prominent absence from the council's membership.
Jim Reed, its founder, has cited the need to protect trade secrets and his belief some APC members are "beyond the pale" as reasons for Resolve's decision not to join the association.
[6] Roy Morgan is another polling firm whose absence has been explicitly noted.