Measuring Public Opinion with Surveys

How can we best gauge the political opinions of the citizenry? Since their emergence in the 1930s, opinion polls—or surveys—have become the dominant way to assess the public will. But even given the long history of polling, there is no agreement among political scientists on how to best measure public opinion through polls. This article is a call for political scientists to be more self-conscious about the choices we make when we attempt to measure public opinion with surveys in two realms. I first take up the question of whom to interview, discussing the major challenges survey researchers face when sampling respondents from the population of interest. I then discuss the level of specificity with which we can properly collect information about the political preferences of individuals. I focus on the types of question wording and item aggregation strategies researchers can use to accurately measure public opinion.