Important piece by Prof @ChinmayTumbe in @livemint on possible migration patterns in India - both internal and external - based on recent demographic changes. Juxtaposed with this is the chart recently shared by @Rainmaker1973 on the per woman birth rate in various states in India. Replacement rate is considered 2.1 children per woman and as can be seen now most of India barring UP, Bihar, Jharkhand and a couple of smaller States is below replacement rate - huge change in the last 20 years. One of the things that stood out for me in the analysis was that if the delimitation of constituencies/ redrawing of Lok Sabha seats happens after some years, the South may not lose out that much as by then it will have a large number of migrants from other regions. Over time internal migration adds up! Remember how the demographic profile of Delhi has changed over the last few decades. Now 35-40% of the Delhi electorate is from Bihar and eastern UP, thanks to internal migrations. As I have said before most things change slowly but really add up over the decades.