Prime Minister of Laguardia

Longest serving
* Francesco Narváes would hold second place with 15 years but most of this time did so as a dictator. He is therefore exuded from this ranking.

Prime ministers per party
* Beto Monti served one term for both the Radicals and the LRP he is hence counted for both groups/parties in the list and contributies 4 years to each of his total 8.

The National Syndicalist Party is exclude from the list as most of their time in power was in a dictatorship.