Sepp Blatter has refused to resign as Fifa president following a request from Uefa chief Michel Platini.
The 79-year-old Swiss held an emergency meeting with key Fifa officials on Thursday after world football's governing body was subjected to yet more damaging corruption claims.
He then met Platini alone, at which point he was urged to quit.
Blatter is seeking a fifth term as president when he takes on Prince Ali bin al-Hussein in Friday's election.
Several influential football figures want the vote delayed after seven Fifa officials were arrested in Zurich on Wednesday.
But others, among them English Football Association chairman Greg Dyke, think it should go ahead, believing Prince Ali now has a good chance of beating Blatter.
Uefa, which governs European football, decided on Thursday not to boycott the election after initially suggesting it might do.
It will continue to back Prince Ali.
Caf, which looks after the interests of Africa, has reiterated its backing for Blatter.
So has the Asian Football Confederation, although one of its members, the Australian football federation, has announced its intention to vote for Prince Ali.
Fifa was plunged into fresh crisis on Wednesday when United States authorities indicted 14 people and arrested seven senior football officials on bribery and racketeering charges.
In a separate development, Swiss officials opening criminal proceedings into the bidding process for the 2018 and 2022 World Cup bid processes.
Blatter's decision to chair an emergency meeting with representatives from Fifa's six confederations is significant.
Such gatherings are rare.
It also took place without two of its nominated members.
Jeffrey Webb, president of the North, Central American and Caribbean Association, and Eugenio Figueredo, president of the South American confederation, were both absent after being arrested on Wednesday.
Subject: Fifa crisis: Blatter refuses to quit as president after Platini request 
