According to Prince Ali's lawyers FIFA turned down his request for the use of transparent voting booths

The Court of Arbitration (CAS) for Sport said it will decide "no later" than Thursday on a case filed by FIFA presidential candidate Prince Ali bin al-Hussein calling for this week's vote to be suspended. (Prince Ali Seeks Postponement of FIFA Presidential Election)

The Jordanian prince lodged the case after FIFA rejected his call for transparent voting booths to be used at Friday's congress where Sepp Blatter's replacement as the head of world football will be chosen.

"The request for provisional measures will be decided by CAS no later than the morning of Thursday 25 February 2016," the Lausanne-based CAS said in a statement.

The "provisional measures" sought by Prince Ali include a suspension of the vote.
Source :AFP