NewsX: In the last 10 days Narendra Modi has not just managed to divide his party, but also managed to divide the NDA. One will have to wait to see if the Gujarat Chief Minister will have the same effect on the country's voters. But polarisation is hardly new in Indian Politics. The Congress, the Samajwadi Party and JD(U) itself have polarised minorities for decades. The BSP has polarised Dalits for nearly as long. Regional parties have polarised votes on parochial grounds since the 1960s.