Tarija is represented in the Plurinational Legislative Assembly of Bolivia by four senators and their alternates elected through proportional representation. They serve five-year terms and qualify for reelection once. The current delegation comprises two senators from Civic Community (CC) and two from the Movement for Socialism (MAS-IPSP): Rodrigo Paz, Nely Gallo, Gladys Alarcón, and Miguel Rejas. Their respective alternates are: Zoya Zamora, Javier Martínez, Luis Casso Vaca, and Natividad Aramayo. Although the bicameral system was adopted in the 1831 Constitution and was maintained in subsequently promulgated constitutions, it can be affirmed that with the exception of very small intervals, the Senate did not, in fact, exercise its functions until the convocation of the 1882 legislature. Furthermore, due to heavy political instability and frequent military interventions since 1882, Bolivia did not experience a continuous, uninterrupted legislative session until 1982.

List of senators Legislature . Senator Party Term of office Alternate Party Term of office . Caucus . Took office Left office Took office Left office . . 2010–2015 1° Rhina Aguirre MAS 19 January 2010 18 January 2015 Dario Gareca MAS 19 January 2010 18 January 2015 2009 MAS 2° Juan Enrique Jurado MAS 19 January 2010 18 January 2015 Mary Eva Vacaflor MAS 19 January 2010 18 January 2015 1° Marcelo Antezana IND 19 January 2010 18 January 2015 Dora Burgos IND 19 January 2010 18 January 2015 CN 2° María Elena Méndez IND 19 January 2010 18 January 2015 Luis Pedraza IND 19 January 2010 18 January 2015 2015–2020Titular senators were sworn in 18 January 2015:

Alternate senators were sworn in 23 January 2015: 1° Milciades Peñaloza MAS 18 January 2015 3 November 2020 Teresa Rodríguez MAS 23 January 2015 3 November 2020 2014 MAS 2° Noemí Díaz MAS 18 January 2015 3 November 2020 Henry Chávez MAS 23 January 2015 3 November 2020 1° Mirtha Arce IND 18 January 2015 3 November 2020 Fernando Campero UN 23 January 2015 3 November 2020 UD 1° Víctor Hugo Zamora 18 January 2015 14 November 2019 Rosario Rodríguez MNR 23 January 2015 16 January 2020 PDC Rosario Rodríguez MNR 16 January 2020 3 November 2020 Vacant 16 January 2020 3 November 2020 2020–2025Titular senators were sworn in 3 November 2020:

Alternate senators were sworn in 9 November: 1° Rodrigo Paz PG 3 November 2020 Incumbent Zoya Zamora FRI 9 November 2020 Incumbent 2020 CC 2° Nely Gallo FRI 3 November 2020 Incumbent Javier Martínez IND 9 November 2020 Incumbent 1° Gladys Alarcón MAS 3 November 2020 Incumbent Luis Casso Vaca MAS 9 November 2020 Incumbent MAS 2° Miguel Rejas MAS 3 November 2020 Incumbent Natividad Aramayo MAS 9 November 2020 Incumbent

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