ROME, May 7, 2018 (Reuters) - The leader of Italy's anti-establishment 5-Star Movement said on Monday his party would not back any stop-gap, technocrat government put together to end two months of political deadlock. Speaking to reporters after meeting with President Sergio Mattarella, Luigi Di Maio said if it is not possible to put together a government based on a political deal between 5-Star and the far-right League, then a snap repeat election should be held.