It would be tempting to attribute this result to the anti-incumbency factor said to be prevalent in these states, perhaps twice over, because the BJP rules the Centre as well. Analysts may also cite the case of Mizoram, where the governing Congress is staring at a major loss to the Mizo National Front.
That would be lazy thinking. The Telangana Rashtra Samiti (TRS) will retain power in what appears to be a landslide, not anticipated even by its most optimistic champions. And not to forget, both Madhya Pradesh and Chhattisgarh had not displayed any aversion to their ruling dispensations in the two previous elections. We need a better understanding of how elections are won or lost.