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As Election Day draws near, many thoughts will turn to the latest polls. On today’s Please Explain, we ask how polls work, what they really tell us, and how much influence they have on voters. Robert Y. Shapiro, Professor of Political Science and Associate Director of the Center for Social Sciences at Columbia University, and Lee M. Miringoff, Director of the Marist Institute for Public Opinion and the President of the National Council of Public Polls, answer your questions. Call 212-433-9692.