The Honorable Congress of the State of Sonora is the legislative branch of the government of the Mexican state of Sonora. The Congress is the governmental deliberative body of Sonora, which is equal to, and independent of, the executive. The Congress is unicameral and consists of 33 deputies. 21 deputies are elected on a first-past-the-post basis, one for each district in which the entity is divided, while 12 are elected through a system of proportional representation. Deputies are elected to serve for a three-year term. Since its installation the congress has been renewed 63 times, hence the current session of the Congress of Sonora (whose term lasts from 2021 to 2024) is known as the LXIII Legislature.

Electoral districts of Sonora

Legislatures of Sonora

Composition

The LXIII Legislature of the Congress of Sonora consists of 33 deputies.

History

Since 1917 the Congress has been composed as follows: María Jesús Guirado Ibarra was elected the first female member of the Congress of Sonora in 1955, which was the first election after the passage of women's suffrage in Mexico. The LXIII Legislature, elected in 2021, became the first women-majority legislature in state history.