I want to know the answer to the following question:
Who led the Union of the Right?
All the background I'm provided with is that "On December 15, 2015, a list of candidates of the Union of the Right, a coalition of centrist and right-wing parties, led by Valérie Pécresse, narrowly won the regional election, defeating a coalition of Socialists and ecologists.". Is that enough to answer the question?
Answer: yes