2017–2022 :The 2017 redistricting process assigned Quintana Roo its
4th district. From 2017 to 2022, the 2nd district had its head town at Chetumal and it comprised four municipalities: :*Bacalar, Felipe Carrillo Puerto, José María Morelos and Othón P. Blanco.
2005–2017 :The 2005 districting scheme created the state's
3rd district. Between 2005 and 2017, the 2nd district covered three municipalities: Othón P. Blanco, Felipe Carrillo Puerto and José María Morelos. The head town was the city of Chetumal.
1978–1996 :The districting scheme in force from 1978 to 1996 was the result of the
1977 electoral reforms, which increased the number of single-member seats in the Chamber of Deputies from 196 to 300; Quintana Roo's allocation, however, remained at two. The 2nd district's head town was at
Cozumel and it comprised five of the state's (at the time) seven municipalities: :*
Benito Juárez,
Cozumel,
Felipe Carrillo Puerto,
Isla Mujeres and
Lázaro Cárdenas.
Prior to 1978 :Quintana Roo was admitted to the union on 8 October 1974. Prior to that, as a federal territory, it was allowed only one seat in the Chamber of Deputies (for the
1st district). The 2nd district was created upon statehood in 1974, by halving the territory of the first district; it elected its first deputy in a special election in 1974. ==Deputies returned to Congress ==