South Africa have cried foul over the tender process for the 2015 and 2019 Rugby World cups and said that their bid has not been treated fairly.
SA Rugby president Oregan Hoskins and Chairman of the South African bid committee Mark Alexander are both in Dublin ahead of the Rugby World Cup host decision.
"We are extremely disappointed that the tender process wasn't followed to the letter........ and also by the recommendation." Alexander told the BBC.
"If one looks at the numbers and the quality of the tender then we believe we have been done in here.
"We are not saying that there is a stitch-up ......but we don't believe that the process was free and fair."
South Africa's anger centres on the fact they have a government guarantee for the 80m (Pound Sterling) bond the IRB requires for hosting the tournament, whereas England have only 25m (Pound Sterling).
"What is the best guarantee you can get? A government guarantee. With England, the balance of the 80m (Pound Sterling) is provided by the RFU, which is a risk." Alexander said.
Ahead of the vote England are considered to be the overwhelming favourite to be named as the host for Rugby World Cup 2015 and Japan for the 2019 edition.
England say that they will put on the biggest World Cup to date and that it will generate a surplus at least 60m (Pound Sterling) bigger than that of their rival bids.