EKOS uses Interactive Voice Response (IVR) to conduct its federal vote intention polls. These short IVR polls will telephone the general public throughout the campaign and ask respondents to express opinions on hot button issues as well as indicate vote intention. Extensive research has been conducted by EKOS to ensure that this method produces comparable results to both traditional telephone survey methods and the hybrid Probit method. IVR polling has been used extensively in the United States with excellent results.