Macron resigned in August 2016 in order to launch a bid in the 2017 presidential election. In November 2016, Macron declared that he would run in the election under the banner of "En Marche!", a centrist movement he founded in April 2016. Macron won the election after defeating Marine Le Pen on the second round on 7 May 2017 by winning 66% of the vote. At his election to the presidency at age 39, he became the youngest President in French history and the youngest head of state since Napoléon III.