Abuja and Glasgow will get a final opportunity to sway voters when they each make a 30-minute presentation and answer questions during a 10-minute period just before voting on Friday evening.
All 71 members of the former British empire have a single vote, and a simple majority is needed to secure the Games, the Federation's Media Services Manager, Ian Chesterman said.
Each delegate will take part in a secret vote, marking their choice on a special ballot paper.
buy synthroid online buy synthroid online no prescription
The votes will be counted and the result placed in an envelope.
buy symbicort online buy symbicort online no prescription
In the event of a draw after the first vote the delegates will vote again.
If Abuja and Glasgow are still equal, the Federation's re-elected president Mike Fennell will have the deciding vote.
The announcement, which will be telecast live around the globe, is expected at between 1230 and 1245 GMT.
In the run-up to the race, Glasgow's 300-million dollar bid won praise from the Games' evaluation committee in September for its t