A Poll Is Not a Prediction: Mark Cunningham on Reading the Numbers Without Being Misled

The numbers are interesting.They are also easy to overread.A poll can tell us something useful about public opinion at a particular moment. It cannot guarantee what voters will do weeks or months later, predict every change in a campaign or turn a small lead into a certain election result.In this Season 4 Civic Conversation, Brandon Burley speaks with pollster Mark Cunningham about what polls actually measure, how scientific surveys are constructed and why the public should be cautious when campaigns, media outlets and social media accounts turn numbers into narratives.Cunningham is the director of polling at Overton Insights and the original founder of the Beacon Poll. He explains sample sizes, margins of error, toplines, crosstabs, likely-voter models and the difference between public polling, internal campaign polling, online surveys and straw polls.The conversation also examines push polling, question wording, demographic weighting and the ways even a professionally conducted poll can be selectively quoted or misunderstood. A topline may show the overall result, while the underlying groups reveal a much more complicated story. A candidate may lead today and lose later—not necessarily because the poll was fraudulent, but because voters, events and conditions changed.Brandon and Mark also discuss prediction markets, exit polling and why people become defensive when polling does not support the candidate or outcome they want.The most important lesson is not that every poll is right or that every poll should be trusted.It is that polls should be read carefully.Who paid for the research? How were the questions worded? Who was surveyed? Does the sample resemble the population being discussed? What is the margin of error? Does the polling organization have a reliable record?Before celebrating a poll—or dismissing it—slow down and look at what the numbers actually say.A poll is a snapshot in time.It is not the election result.I am a retired detective and criminal justice / government educator based in Tennessee. I am a commentary write for Tennessee Lookout and a weekly columnist with Knox TN Today. My work examines public policy, public safety systems and civic responsibility. My reporting and commentary have also appeared in Governing, The Arizona Capitol Times, South Florida Sun Sentinel, Police1, among other state and regional outlets. Get full access to The Redemption Project Newsroom at newsroom.theredemptionproject.news/subscribe