Here's your 5-point cheatsheet:
Mr Singh, whose father was instrumental in setting up the BJP's foundational base in Manipur, is an MLA from Nambol constituency under Bishnupur district.
His wife, Dr Romabai Lairenjam, holds an MD from a top medical college in Madhya Pradesh, and has worked in Delhi's RML Hospital. She later joined local politics after she was elected chairperson of the Bishnupur panchayat.
Mr Singh served in the Indian Police Service (IPS) till his retirement. He did MA in History from St Stephen's College under Delhi University in 1987, and an LLB from Manipur University in 2002.
Many see the BJP leader who has wide acceptance within the party as a strong candidate against the Congress's Inner Manipur debutant Dr Angomcha Bimol Akoijam, who teaches in Delhi's Jawaharlal Nehru University (JNU).
He is also seen as a leader who usually keeps a low profile, avoids getting into controversies, and speaks more through actions. His other key rival in this election is Maheshwar Thounaojam of the Republican Party of India (Athawale).
Featured Video Of The Day
Russia And NATO At Loggerheads | India Global Special Broadcast
Congress Candidates Leading In Both Lok Sabha Seats In Manipur BJP Asks Poll Body To Reject Inner Manipur Congress Candidate's Papers Over Affidavit Row BJP Names 3 More Candidates For Lok Sabha Polls, Drops All Sitting MPs Amazon Employee Greets Friend At Wedding, Dies Of Cardiac Arrest "Speculative, Inaccurate": Canada Factchecks Own Media Over India Charge Canada Rolls Back Extra Screening For Fliers To India Karnataka's Golden Chariot Train Will Return Next Month: What To Expect Joe Rogan Mocks 'The View' Co-Host Who Accuses Him Of Believing In Dragons Letter Vs Letter As BJP, Congress Clash Over Manipur Crisis Track Latest News Live on NDTV.com and get news updates from India and around the world.