The state constituency was first contested in 2003 and is mandated to return a single Assemblyman to the Malacca State Legislative Assembly under the first-past-the-post voting system.

The Asahan constituency contains the polling districts of Simpang Tebong, Pekan Selandar, Bukit Sedanan, Batang Melaka, Jus, Bukit Senggeh, Pekan Nyalas, FELDA Bukit Senggeh, Pondok Batang, Ladang Bukit Asahan and Pekan Asahan.

[3] Ethnic breakdown of Asahan's electorate as of 2021[4] According to the gazette issued on 31 October 2022, the Asahan constituency has a total of 11 polling districts.

[5] The electoral results for the Asahan state constituency in 2004, 2008, 2013 and 2018, 2021 are as follows.

"Federal Government Gazette - Notice of Contested Election, State Legislative Assembly for the State of Selangor [P.U.