In 1921, the radical wing of the Italian Socialist Party broke away to form the Communist Party of Italy. This changed the political landscape, as the remaining Socialist Party – diminished in numbers, but still the largest party in parliament – became more moderate and was therefore seen as a potential coalition partner for Giolitti's government. Such an alliance would have secured a large majority in parliament, ending the political deadlock and making effective government possible. To prevent this from happening, Mussolini offered to ally his Fascists with Giolitti instead, and Giolitti accepted, under the assumption that the small Fascist movement would make fewer demands and would be easier to keep in check than the much larger Socialists.