Congress of SinaloaThe Congress of the State of Sinaloa is the List of [Mexican state legislatures|legislature] of the Mexican state of Sinaloa. The Congress is unicameral. The legislature was established on 13 May 1831.Electoral systemThere are 40 seats: 24 deputies are elected by first-past-the-post in single-member districts and 16 are elected through proportional representation. The chamber is renewed every three years.