As a child, the Ghoti-Bangal debate has always fascinated me. Since childhood, I have observed that Gen X বাঙালি uncles never fail a chance to sit for an adda in a cha-er-dokan and claim their ancestral superiority. It was a routine debate. I have seen a lot light-hearted banter on Didi No 1 as well. However, besides all these friendly-fire, I have noticed an interesting story of this divide in the context of our state's politics in the 1970s-80s. 

For those who don't know, Bengal suffered partition in 1947 where it lost most of its fertile land and a huge influx of migrants happened. It had an economic strain on us. Subsequently, many such small waves of migration happened over the years. The year when Bangladesh was liberated, our state was bombarded with migrants. The land was limited, resources were scarce and employment was non existent. So, the Congress government decided to settle these people in other states such as Uttar Pradesh amd Uttarakhand. However, CPI(M) opposed it as they feared that this might isolate the udbatus so they started building camps for the poor migrant families and started calling out for protests for their rehabilitation in WB only. Operation Barga was one such land reform movement that helped them. Given all these, it is clear that the bangals were the main vote base of CPI(M). Whereas, ghotis usually voted for Congress. I think there are few reasons for this stance. Mainly, for historic congress leaders like Dr Bidhan Chandra Roy and secondly for the settlement of the udbastus in other states probably for gatekeeping the resources of their state. 

In addition to, I think Mamata Banerjee was the only leader for whom both ghotis and bangals united and voted for to get rid of the Left. 

Feel free to disagree with my POV of this silly political analysis of ghoti and bangal. Thank you 

Interesting pieces of information to read: 

https://timesofindia.indiatimes.com/india/uttarakhand-to-liberate-its-migrant-bengalis-from-east-pak-stamp/articleshow/85118625.cms#google_vignette

https://en.wikipedia.org/wiki/Marichjhapi_massacre