List of senators of the Philippines in the 9th Congress by seniority

This is a complete list of senators of the Philippines during the 9th Congress of the Philippines listed by seniority from June 30, 1992, to June 30, 1995.

The criteria for seniority used in this article are derived from the cumulative length of service of a member of the Senate prior to the current Congress. Although an official roster ranking senators by seniority is not publicly available, their total cumulative years of service have been used to determine seniority. It has long been customary, following the practice of the United States Senate, to elect the most senior senator as either president of the Senate or president pro tempore, although this practice has become less common in the modern Senate. Furthermore, seniority is traditionally considered in the selection of chairpersons of major Senate committees.

In cases where senators have equal cumulative service, seniority is determined by the following criteria, in order: Longest uninterrupted period of service Earlier date on which the cumulative length of service was achieved Alphabetical order of surnames

In this Congress, Arturo Tolentino was the most senior senator, having previously served 14 years in the pre-martial law Senate, while Freddie Webb was the most junior senator.

List of senators by seniority Rank Senator Party Length of previous tenures Notes Start of Congress End of Congress 1 Arturo Tolentino NPC 2 Ernesto Maceda NPC 5 years, 268 days Senate president pro tempore (until January 18, 1993) 3 John Henry Osmeña NPC LDP 4 Heherson Alvarez LDP 5 Edgardo Angara LDP Senate president (from January 18, 1993) 6 Butz Aquino LDP 7 Neptali Gonzales LDP Senate president (until January 18, 1993) 8 Teofisto Guingona Jr. LDP Senate president pro tempore (from January 18, 1993)Resigned on July 6, 1993, upon being appointed as Executive Secretary. 9 Ernesto Herrera LDP 10 Joey Lina LDP 11 Orly Mercado LDP 12 Leticia Ramos-Shahani LakasSenate president pro tempore (from July 26, 1993) 13 Alberto Romulo LDP 14 Wigberto Tañada Liberal 15 Nina Rasul Lakas 16 Rodolfo Biazon LDP rowspan="9" 17 Nikki Coseteng NPC 18 Gloria Macapagal Arroyo LDP 19 Blas Ople LDP 20 Ramon Revilla Sr. LDP 21 Raul Roco LDP 22 Tito Sotto LDP 23 Francisco Tatad NPC LDP 24 Freddie Webb LDP

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