Ilocos Sur's 3rd congressional district was one of the three congressional districts of the Philippines in the province of Ilocos Sur in existence between 1907 and 1919.
[1] It was created in 1907 from former territories of the province under Philippine Commission Act No.
[2] The district was originally composed of the municipalities of Bangued, Bucay, Dolores, La Paz, Pilar, San Quintin and Santa, most of which were located in Abra, a sub-province of Ilocos Sur since 1905.
As a result, Santa remained in Ilocos Sur and was redistricted to the 2nd district, while the other towns became part of Abra and were redistricted to its new at-large district.
[4] The district was last represented by Eustaquio Purugganan of the Nacionalista Party (NP) who was also elected as the first representative of Abra's at-large congressional district following its dissolution.