The Legislative Districts of Ilocos Sur, namely the first and second districts, are the current representations of the province of Ilocos Sur in the Philippine House of Representatives.The province was divided into three congressional districts from 1907 to 1919. Abra was last represented as part of the province's now-defunct third district in 1919, after its re-establishment as a province on March 3, 1917 by virtue of Act No.
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