(1) It is the beginning of the end for TMC. However, BJP is not yet fully there. To be fully "there", it has to convince the Bengali Hindu "middle" that it fully respects the Bengali Hindu culturally and will not repeat TMC appeasement of mullahs once in power.

(2) Bengali Hindus, have tried in general to be pan-Indian from the beginning of modern Indian politics in the 19th c, and were among the two key ethnicities to massively put wind in nationalist sails: both through INC and militant insurrectionists.

(3) Their "regionalism" was a later reaction to INC factionalism. Even the "left" was part of that reaction: a buffer/alternative to INC dominance, which morphed and swung between Janata and INC. So Bengali Hindu need not be averse to a new pan-India force like BJP either.

(4) But historical political experience colours a whole populations reactions for long time periods, so the Bengali Hindu's "pan-Indicism" in politics will be coloured with a cautious skeptism. BJP bosses need to understand this. If they dont they might walk the INC way.

(5) BJP centre promptly penalizes those seemingly frm its own spectrum - who r seen to hv hurt mullah sentiments in any way. A few simple warnings wd muzzle the Bong bashers masquerading as "Hindutva/BJP/RW" etc. and wd thus not put ammunition into anti-BJP sentiment in Bengal.

(6) BJP centre's reticence, (or "purely cultural org" RSS who can do the same job tactically) in taming up the shrill and often racist/vicious shilling from apparently "Hindutva/Hindu" claimants ag generic Hindu Bengali is seen and effectively used ag BJP's prospects in Bengal.

(7) In terms of elections, TMC is going to be hit: but if BJP can't control the narrative, the opposition to TMC will get divided into support for BJP and support for the Left. The Left will however want to support TMC as it sees BJP as its "bigger" enemy.

(8) Much of the scum that came to dominate the Left (typical in all leftist drama), shifted to TMC, and will shift back to left. However, BJP will be tempted to win the TMC cadre over - which is standard Indian party politics, and one reason why nothing ever changes.

(9) absorbing TMC scum in to BJP is a mistake it can't afford to make - as it will add to the skepticism of the common Hindu voter and may help the struggling and "on the way out" Left - even though it may not save the Left. But this will allow TMC breathing space.

(10) TMC has no future - a line that BJP needs to drum into ears and hearts. It has no competent succession, its super dependence on "charismatic" ldrship - which made it successful in a polity bitter with "party-ism" - is also its weakness.

(11) BJP needs to convince the Bengali Hindu that they need to and can trust the BJP- made good by actual moves on the ground, and for a start with reigning in the trolls of "Bong basher" brigade - who for all practical purposes seem to be working for the mullahs/seculars.

(12) Its a tricky and careful set of moves that needs to be done - to isolate both the left and TMC, and not let the "common" cadre and political funding dependent intermediate structures fill up BJP's structure as and when it comes to power.

(13) there r many moves BJP will hv to reassure the Bengali Hindu on - no moves to truncate or edit the state, no cultural impositions (the Hindu there r Hindu enough), no appeasement of the mullah, etc. Its very doable. An incorrect/arrogant step may hv pan-Indic consequences.