It’s amusing that a society with a codified caste system consigning entire segments to hereditary servitude is complaining about prejudice from a random preacher. Never mind the lack of a European Prime Minister, ever. Has an Untouchable or someone from Nagaland or Arunachal ever been a candidate for PM, let alone the man himself?
Modi himself is "lower caste", something that our self-proclaimed "elites" never fail to mention, not realising they are giving him a huge electoral boost.
As for the North Eastern states having a PM candidate, their populations are far too small for them to have clout. Far bigger, Industrially advanced states like Tamil Nadu have never had one. Actually most PMs have been from Uttar Pradesh, which has population approaching 300 million. Meghalaya-Nagaland combined may not reach 6 million.