The Gallup Poll is one of the most recognized and revered polls used to interpret public opinion. It is used to guage public opinion on various political, social and economic issues as well as other controversial topics. The Gallup Poll is often found to be accurate in its polling of events such as elections, which is why it is considered the definitive poll by most organizations.
The Gallup Poll is conducted by the Gallup organization. The goal of The Gallup Poll is to get the same responses from its sample population that it would if it actually went out and asked all members of the actual population. They conduct the poll using a method of random sampling under the principal of equal probability of selection.