New Delhi: Andhra Pradesh Chief Minister N Chandrababu Naidu Wednesday met Congress President Rahul Gandhi and discussed plans to hold a meeting of Opposition parties on May 21, two days ahead of Lok Sabha results to chalk out a post-poll alliance.Naidu met Gandhi before heading out to West Bengal to attend public rallies in support of the ruling Trinamool Congress in the state, sources said. In a brief meeting, the Telugu Desam Party (TDP) chief is believed to have discussed the voter-verified paper audit trail (VVPAT) issue, the voting percentage in the recently held five-phase polling besides the Andhra Assembly election developments, the sources said. Also Read – India gets first tranche of Swiss account details under automatic exchange frameworkThe sources said Naidu and Gandhi also discussed the post-poll scenario and more or less agreed to call a meeting of Opposition parties on May 21. Naidu will be meeting West Bengal Chief Minister and Trinamool Congress chief Mamata Banerjee apart from attending her rallies on Wednesday and Thursday. According to Naidu, there were only three possible scenarios. One- a Congress-led government, two- a government of regional leaders where Congress would support from outside, or a government where both Congress and regional parties would join. Also Read – Trio win Nobel Medicine Prize for work on cells, oxygenThe Andhra Pradesh CM was in Delhi to attend the Supreme Court hearing on a petition filed by the Opposition parties to review its judgment rejecting 50 per cent random physical verification of EVMs using VVPATs. The apex court dismissed the petition following which the parties again met the Election Commission to press their demand. With two more rounds of elections to go, opposition parties are planning to meet the President after the elections are over, to impress upon him not to call the single largest party to form the government in case of a split verdict, sources said.