1948 Palmiro Togliatti (Italian Communist Party - PCI)
Dead 1949, due to complications after the Pallante assassination attempt. His death triggers a brief but serious burst of violence.
1949 Pietro Nenni (Italian Socialist Party - PSI)
Seen as a mediocre Prime Minister by most.
1952 Alcide De Gasperi (Christian Democracy - DC)
Died prematurely in 1954.
1954 Antonio Segni (Christian Democracy - DC)
Under his rule, conspiracy theories concerning De Gasperi's "assassination" by Communist extremists arose. The man died of cancer, but Togliatti's assassination was seen by many as enough justification for a "revenge".
1956 Giuseppe Saragat (Italian Social Democratic Party - PSDI)
ITTL PSI and PCI didn't create the People's Front but rather presented themselves as Allied parties, thus preserving the PSI from a dramatic split and allowing a minority government with support from Republicans and other small moderate leftist groups; however, after the violent reaction to Togliatti's death, the rise of militant and armed extremism and the twin failures of both Nenni and the DC to stabilise the situation, USA shifts his support to the birth of pro-Western "Third Forces". Thus, Achille Lauro's People's Democratic Party rallies the moderate conservative factions, while Giuseppe Saragat creates its PSDI with moderates from the PSI and the PCI along with Republicans. The first Saragat government is a coalition with the crumbling DC. The PSI is moving in strange directions, think post-communist "People's Socialist Parties" in Northern Europe, while the PCI is falling back to Stalinism.
1960 Amintore Fanfani (Christian Democracy - DC)
Becomes Prime Minister after a goverment shuffle due to a mix of internal rivalry and some minor financial scandals, he was considered as a compromise candidate and a token gift to the DC last just a year before the end of the legislation and new elections.
1965 Achille Lauro (People's Democratic Party - PDP)
Fanfani ruled competently, but the shady way with which he was put into power, and accusations of corruption, gave enough material to his enemies to aggressively campaign against the Christian Democracy. The People's Democratic Party risen to prominence ten years earlier finally manages to become the ruling party, styling itself as the "saner" alternative for Italian moderates.
1969 Achille Lauro (People's Democratic Party - PDP)
Lauro won in 1969 a meager victory, due to rise of social tensions in 1968. He was eventually able to rally enough moderates behind the flag of his party due to a renewed Red Scare, but the strong comeback of the Socialist Party after the Prague Spring and rising frictions between moderate and progressive factions of the Christian Democracy ultimately forced Lauro to allow the birth of a minority Cabinet between PPD and DC, supported from the outside by the extremely conservative National Democratic Party, led by Alfredo Covelli, and born out of the fusion between Christian Democratic arch-conservatives, MSI neofascists moderates led by Michelini and conservative monarchists led by Covelli himself. The party's rise to prominence, with a 7% result, and its co-optation in the sphere of power, seriously jeopardized Italian politics, paving the way for further collaboration between Socialists and Social Democrats and creating a rift inside DC.
1972 Giorgio Amendola (Italian Social Democratic Party - PSDI)
Although his party won by large margins and he was viewed very favorably by the Italian people, his term was prematurely ended following the Sammarinese Affair which successfully discredited both him and his government. The ensuing backlash resulted in a massive overhaul of Italian politics.
1974 Sandro Pertini (Italian Socialist Party - PSI)
After the terrible scandal, a caretaker goverment was put in place to complete some institutional and economic reform. A figure beloved and trusted was needed, so an outspoken outsider, Pertini, was chosen.
1978 Sandro Pertini (Italian Socialist Party - PSI)
Pertini eventually becomes the most loved Prime Minister since the founding of the Republic, giving stability to the nation's politics, but during his term, some bloody terroristic attempts by organized crime shook the nation.