Interviewing for the Quinnipiac University Poll is conducted from the facilities of the Quinnipiac University Polling Institute. Professionally trained students and non-students conduct the interviews using a CATI (Computer Assisted Telephone Interviewing system). For a typical public opinion survey a randomly-selected sample of about 1,000 adults aged 18 and over are interviewed over a 5-6 day period.
For a sample of 1,000 adults, the sampling error is 3.1 percentage points at the 95 percent level of confidence. This means that 95 percent of the time, the results obtained should be no more than 3.1 percentage points above or below the figure that would be obtained by interviewing the entire population.