Description :
Polls have never occupied such a place in political life. They are at the heart of the news, give rise to incessant comments, have become indispensable for political actors and even participate in the selection of candidates for the 2022 presidential election. Yet never do the institutes seem to have been so wrong. To grasp the reasons for this gap between polling and political realities, we need to open the black box of surveys and look at how they are manufactured, from sampling to the formulation of questions. These ten lessons are thus a valuable guide to better decode the polls and to apprehend with caution the results of the surveys for the upcoming elections.