Some polling is also conducted over the phone by carrying out random calls to collect demographic details of each caller in order to then match them with a quote sample. When they need to dip into a certain poll it will select a specific quota sample from that larger group and then send them the survey. Most of the questioning is done via the internet where pollsters have collated large groups of people who form a panel. In order to ensure the poll is as accurate as possible, the companies adhere to strict rules about sample size, ensuring a random selection of participants and including margins of error in the results.
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