In the first round, held on 5 May 2012, he was the most voted candidate with 48% of votes despite being only supported by his own Italy of Values and a number of minor left-wing parties (Federation of the Greens and Federation of the Left).
International Boxing Federation | World Federation of Trade Unions | Federation of Malaya | American Federation of Labor | Fédération Internationale de l'Automobile | Federation | United Federation of Planets | Left-wing politics | United States Chess Federation | Fédération Internationale de Motocyclisme | International Federation of Red Cross and Red Crescent Societies | Federation of Rhodesia and Nyasaland | Fédération Aéronautique Internationale | American Federation of Teachers | International Hockey Federation | Armenian Revolutionary Federation | World Bridge Federation | National Federation of State High School Associations | International Tennis Federation | California Interscholastic Federation | No Child Left Behind Act | International Ski Federation | International Federation of Trade Unions | Communist Party of the Russian Federation | Western Federation of Miners | National Retail Federation | left-wing politics | International Sailing Federation | International Ice Hockey Federation | Democrats of the Left |
The MPL was formed in September 2012 by the merger of Socialism 2000 (leader: Cesare Salvi) and Labour–Solidarity (leader: Gian Paolo Patta), both constituent members of the Federation of the Left (FdS).