Maimane told the National Assembly he knew that former president Nelson Mandela would have had the courage to vote with the opposition to remove Zuma from power.
“I would hope that there are enough people in this house who would put politics aside and do what is right,” Maimane said.
He singled out former finance minister Pravin Gordhan, whose sacking by Zuma triggered the motion, and asked whether could be counted on to vote in favour of it.
“Honourable Gordhan, would you play your part today in resetting the course of history?”
He then proceeded to ask the same of former tourism minister Derek Hanekom and Deputy President Cyril Ramaphosa.
And he saluted dissident ANC MP Makhosi Khoza who has vowed to vote with her conscience as doing the “honourable and the ultimate service to our people”.
Speaker Baleka Mbete announced on Monday that she would allow the vote on the motion to happen by secret ballot, raising opposition hopes that ruling party MPs would support it.