Fifa will get a new president on Friday when 207 delegates from around the world gather in Zurich, Switzerland to vote for a successor to Sepp Blatter.
In charge of world football’s governing body since 1998, Blatter, 79, said last year he was standing down amid a growing corruption crisis.
Five candidates want to replace him.
They are Sheikh Salman bin Ebrahim al-Khalifa, Gianni Infantino, Prince Ali bin al-Hussein, Tokyo Sexwale and Jerome Champagne.
The election process is expected to begin at 12:00 GMT, but several rounds of voting may be required before a winner is known.
How does voting work?
Each candidate has 15 minutes to address the congress before voting starts at approximately 12:00 GMT.
There are 209 Fifa nations but Kuwait and Indonesia are currently barred from taking part, so that makes 207 eligible voters.
To become president after the first round of voting, a candidate needs to secure two-thirds of the available votes. If no candidate achieves that mark, then a simple majority is required in the second round.
If there is still no winner, then a third round will take place, minus the candidate with the fewest votes in round two.
Fifa says a winner must be declared on Friday because an ice hockey rink is due to be installed at the Hallenstadion venue at midnight.
So determined is Fifa to get this election done that it has spent £500,000 converting its headquarters into a back-up venue.