This book studies political leadership at the local level, based on data from a survey of the mayors of cities of more than 10,000 inhabitants in 29 European countries carried out between 2014 and 2016. The book compares these results with those of a similar survey conducted ten years ago. From this comparative perspective, the book examines how to become a mayor in Europe today, the attitudes of these politicians towards administrative and territorial reforms, their notions of democracy, their political priorities, whether or not party politicization plays a role at the municipal level, and how mayors interact with other actors in the local political arena.