I think original DTC, which was proposed at around 2009 had asked for abolition of STT but it was later revised & now they're only talking about reducing it, that's it. But there've been talks of "Financial Transaction Tax" in Europe so if that goes through then that might give politicians here to keep STT as it is or may be even increase it because usually anti-STT expers point to the fact European & US markets attract more investors/traders & are more liquid because they don't have such taxes so if FTT is imposed Europe then it may've a negative effect on Indian policies too.......