What does the average American voter really think about the 2016 presidential candidates? How much do those beliefs depend on things like income, education level, or even personality? With the American Panel Survey (or TAPS), social scientists have a powerful tool to explore questions about human attitudes and behaviors over time. This year, researchers are using TAPS to learn about why voters choose certain candidates over others, and when and why they sometimes change their minds. Steven Smith, the director of TAPS, explains how the survey works and why it's such an asset for social scientists.