Barisan Nasional's Bagan Pinang state assemblyperson Azman Mohd Noor, 54, passed away today from blood infection.
He passed away at about 2.30pm at the Seremban Specialist Centre.
The outcome of the by-election however will not jeopardise the BN's control in the state as the coalition controls 20 other seats out of 36 in all. Pakatan controls the remaining 15 - DAP (10), PKR (4) and PAS (one).
In March 2008, Azman defeated PAS' Ramli Ismail by 2,333-vote majority.
He was a first-term state representative.
The seat is one of the five state seats under the Teluk Kemang parliamentary seat in Negri Sembilan, currently held by PKR's Kamarul Baharin Abbas.
Of the five state seats in Teluk Kemang, two are held by Umno, two by PKR and one by DAP.