Legislative size (directly elected)

Mark P. Jones, Martín Lauga and Marta León-Roesch, “Argentina,” in Elections in the Americas: A Data Handbook, vol. 1, South America, ed. Dieter Nohlen (Oxford: Oxford University Press, 2005), 104.

1991 marked the expansion of the Chamber of Deputies from 254 to 257 seats due to the recognition of Tierra del Fuego as a province.