From 1830 he began a more political life holding various public positions, these included serving as Mayor of Valladolid and Vice-Governor of Yucatán.
During 1835, he served during two brief periods as Governor of Yucatan.

Sáinz de Baranda died in the city of Mérida on 16 December 1845 at the age of 58, his remains were transferred to the city of Campeche and deposited in Campeche Cathedral from which they were exhumed in 1987 to be transferred and re-buried in the Rotunda of the Illustrious Persons in Mexico City on 13 March of that same year, with the corresponding naval honors.
From 1830 he began a more political life holding various public positions, these included serving as Mayor of Valladolid and Vice-Governor of Yucatán. During 1835, he served during two brief periods as Governor of Yucatan. 
Sáinz de Baranda died in the city of Mérida on 16 December 1845 at the age of 58, his remains were transferred to the city of Campeche and deposited in Campeche Cathedral from which they were exhumed in 1987 to be transferred and re-buried in the Rotunda of the Illustrious Persons in Mexico City on 13 March of that same year, with the corresponding naval honors.
Pedro Sáinz de Baranda y Borreiro