Wikipedia
Trasformismo (Transformism) refers to the method of making a flexible centrist coalition of government which isolated the extremes of the left and the right in Italian politics after the unification but which happened before the rise of Benito Mussolini and Fascism.
The process was initiated by Agostino Depretis, the Italian Prime Minister in 1883, who was a member of the Constitutional Left party. He moved to the right and reshuffled his government to include Marco Minghetti's Conservatives. This was a move Depretis had been considering for a while before 1883. The aim was to ensure a stable government that would avoid weakening the institutions by extreme shifts to the left or right. Depretis felt that a secure government could ensure calm in Italy.
At this time middle class politicians were more concerned with making deals with each other and less about political philosophies and principles. Large coalitions were formed, with members being bribed to join them. The liberals, the main political group, was tied together by informal "gentleman's agreements", but these were always in matters of enriching themselves. Indeed, actual governing did not seem to be happening at all, but since only 2 million men had franchises, most of these wealthy landowners did not have to concern themselves with such things as improving the lives of the people they were supposedly representing democratically.
One of the most successful politicians was Giovanni Giolitti who succeeded in becoming Prime Minister on five different occasions over 20 years. Under his influence, the Liberals did not develop as a structured party. They were, instead, a series of informal personal groupings with no formal links to political constituencies.
However trasformismo fed into the debates that the Italian parliamentary system was weak and actually failing; it ultimately became associated with corruption. It was perceived as the sacrifice of principles and policies for short term gain.
The system of trasformismo was little loved and seemed to be creating a huge gap between 'Legal' (parliamentary and political) Italy, and 'Real' Italy where the politicians became increasingly isolated. This system brought almost no advantages, illiteracy remained the same in 1912 as before the unification era, and backward economic policies, combined with poor sanitary conditions, continued to prevent the country's rural areas from improving.