Sailana is one of the 230 Vidhan Sabha (Legislative Assembly) constituencies of Madhya Pradesh state in central India. This constituency came into existence in 1951 as one of the 79 Vidhan Sabha constituencies of the erstwhile Madhya Bharat state. It was abolished in 1956 but again came into existence in 1961. This constituency is reserved for the candidates belonging to the Scheduled tribes since its inception.
Sailana (constituency number 221) is one of the 5 Vidhan Sabha constituencies located in Ratlam district. This constituency covers the entire Bajna and Sailana tehsils of this district.
Sailana is part of Ratlam Lok Sabha constituency along with seven other Vidhan Sabha segments, namely, Ratlam Rural and Ratlam City in this district, Alirajpur and Jobat in Alirajpur district and Jhabua, Thandla and Petlawad in Jhabua district.