Casino boss Nigel Morrison spoke of talks over the national convention centre going "quite quiet" at election time.
He told SkyCity shareholders in February there were "renewed" talks over building the convention centre in return for gambling concessions after National's victory.
The comments have brought questions over whether the Government went quiet on the deal during the election campaign to avoid negative coverage.
SkyCity has offered to pay the $350 million needed to build the centre in return for concessions at its Auckland casino.
The Government announced the negotiations in June last year but it went largely unnoticed after a 6.3 magnitude earthquake hit Christchurch on the same day.