Italian Reformist Socialist Party

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Italian Reformist Socialist Party
Partito Socialista Riformista Italiano
Secretary Ivanoe Bonomi
Founder Leonida Bissolati
Founded June 10, 1912 (1912-06-10)
Dissolved February 10, 1924 (1924-02-10)
Split from Italian Socialist Party
Merged into United Socialist Party
Headquarters Rome, Italy
Ideology Social democracy
International affiliation None
Colors      Red
Politics of Italy
Political parties

The Italian Reformist Socialist Party (Italian: Partito Socialista Riformista Italiano, PSRI) was a social-democratic political party in Italy.


It was formed in 1912 by those leading reformists who had been expelled from the Italian Socialist Party because of their desire of entering in the majority supporting Prime Minister Giovanni Giolitti. Leading members of the PSRI were Leonida Bissolati, Giacomo Matteotti, Ivanoe Bonomi and Meuccio Ruini.[1] In the 1913 general election the party won 2.6% of the vote and 21 seats in single-seat constituencies spread in almost all the Italian regions (some others such as Ruini were elected for the Radicals[2]), while in 1919 they stopped at 1.5% and gained only 15 seats under the new proportional system.[3]

After World War II Bonomi and Ruini launched the Labour Democratic Party as the continuation of the PSRI and positioned it within the National Democratic Union, that comprised the Liberals and some former Radicals.

Electoral results[edit]

Italian Parliament[edit]

Chamber of Deputies
Election year # of
overall votes
 % of
overall vote
# of
overall seats won
+/– Leader
1913 196,406 (#6) 3.9
19 / 508
Leonida Bissolati
1919 82,157 (#9) 1.4
6 / 508
Decrease 13
Leonida Bissolati
1921 37,892 (#13) 0.6
1 / 535
Decrease 5
Ivanoe Bonomi


  1. ^ Massimo L. Salvadori, Enciclopedia storica, Zanichelli, Bologna 2000
  2. ^ David Busato, Il Partito Radicale in Italia da Mario Pannunzio a Marco Pannella, 1996
  3. ^ Piergiorgio Corbetta; Maria Serena Piretti, Atlante storico-elettorale d'Italia, Zanichelli, Bologna 2009