Giving his assessment of Bharatiya Janata Party's (BJP) time in power, top psephologist and Axis My India founder Pradeep Gupta on Wednesday said the party currently in Centre can remain in power as long as its governance performance does not see a sharp drop.In this image received on May 20, Prime Minister Narendra Modi departs for India from Italy after concluding his five-nation visit (PMO)Pradeep Gupta, whose Axis My India exit poll has correctly predicted several election outcomes, drew a parallel with the long period of dominance once enjoyed by the Congress, Gupta suggested that Indian politics was witnessing another cycle of one-party predominance.Pradeep Gupta's prediction for BJPGiving a ballpark estimate on the number of years the BJP is likely to stay in power, Pradeep Gupta said party's current phase of political dominance, which began in 2014, is likely to last “at least 20 years”, PTI news agency reported.The psephologist, whose exit poll was the only one to rightly predict actor Vijay-led TVK's win in Tamil Nadu, argued that the ruling party's position would remain secure as long as its governance performance does not weaken significantly.Citing Congress's example, Pradeep Gupta explained how there is a “threshold in politics”."Earlier, Congress ruled continuously till 1977. After that, it started facing difficulties. In those days, we used to talk about a political generation lasting around 20 years. That 20-year cycle will remain even now," PTI quoted Gupta as saying on Wednesday, suggesting that the BJP could similarly remain the central pole of Indian politics for an extended period.‘BJP will now have to super perform’The future of both the ruling alliance and the opposition depended heavily on the performance of the incumbent government, he said, adding that the Bharatiya Janata Party will now have to "super perform"."After receiving such a massive mandate, expectations from the BJP have also increased. So the BJP and the NDA will now have to super perform," he said."Till the time their performance does not become weak or poor, they will keep winning and the opposition will keep losing," Gupta added.In Gupta's opinion, Congress faced consequences of what he described as “legacy issues” related to perceptions of past misgovernance, making its political recovery a longer process."Even if you talk about 2029, it would mean around 15 years (out of power for Congress). I feel it may take at least five more years for them to convince the entire country," he was quoted as saying.At the same time, Gupta noted that political dominance also contributed in raising public expectations."When you reach great heights, there is also a tendency to come down later. BJP has also reached that stage where expectations from it have risen," he said.