A total 10 contestants from BJP, Congress, Trinamool Congress, Naga People's Front, NCP, JD(U) and Aam Admi Party, besides three independents are in the fray.
The candidates whose fate will be decided today are sitting Congress MP Thangso Baite, Gangmumei Kamei (BJP), C Doungel (NCP), Kim Gangte (TMC), Soso Lorho (Naga People's Front), L Gangte (JD-U) and M K Zou (AAP).
An electorate of 9,11,699, of whom 4,63,068 are women, will cast their votes in 511 polling booths.
Polling for the second seat in the state, Inner Manipur constituency (valley districts) will be held on April 17.