In a bid to prevent a repeat of instances of votes being declared invalid during the Presidential polls, NDA MPs will take part in a dummy voting exercise on Friday, a day before the vice-presidential election.
The NDA MPs will also be joined by the lawmakers from the AIADMK, the TRS and the YSRCP, three regional parties supporting the candidature of M Venkaiah Naidu.
Naidu will also address them, seeking their votes, according to sources in the BJP.
The dummy exercise will be followed by a dinner and Prime Minister Narendra Modi is expected to join the MPs then. He will also speak to them, they said.
During the presidential poll, 77 votes in total were declared invalid and 21 of them belonged to parliamentarians, hailing from various parties.
Both Modi and Shah in their addresses to BJP members have emphasised on voting correctly to rule out any vote going invalid.
Unlike the presidential election in which the electoral college also includes MlAs, only MPs of the two Houses can vote in the vice-presidential poll.
Naidu, the NDA candidate, is in contest with the opposition nominee Gopalkrishna Gandhi.
The current NDA strength in the lok Sabha and the Rajya Sabha is 337 and 80 respectively. The AIADMK, the TRS and the YSRCP have together 50 and 17 MPs in the two respective Houses.