The outcome of a race is ultimately up to voters to decide. And while polls aren’t always perfect, they can be helpful to gauge support for a candidate and inform decisions for a campaign. CNN Political Director David Chalian sits down with prominent Republican pollster Neil Newhouse to discuss the state of the GOP presidential primary, what it’s like to be a lead pollster for a presidential campaign, and how he’s adjusted for challenges the polling industry is facing.To learn more about how CNN protects listener privacy, visit cnn.com/privacy