article: Media playback is not supported on this device A winner must be declared on the night - as an ice hockey rink needs to be laid at midnight for a match at the same Hallenstadion venue the following day. But what else do you need to know? BBC Radio 5 live's sports news correspondent Richard Conway explains. Media playback is not supported on this device Fifa's 209 nations will gather in Zurich for what is billed as an "extraordinary congress". It was called after Sepp Blatter dramatically announced last June that he would step aside after 18 years as Fifa president. The 79-year-old Swiss said he was "laying down his mandate", which has led to some concern he may not have actually resigned. However, Fifa officials are confident he will not make an awkward re-appearance - not least because he has been banned from football for eight years over a "disloyal payment" of £1.3m to suspended Uefa president Michel Platini. Both men deny wrongdoing and are appealing against their bans. Blatter also has no accreditation to get into the conference hall on the outskirts of Zurich where the congress is being held. There are two big issues to settle. First, the FA representatives have to agree to a package of reforms designed to eliminate the problems that have plunged Fifa into crisis in recent months and restore its reputation. Then, if and when that is formalised, they have to appoint a new president. Media playback is not supported on this device Given the hype and spin around the election the reforms have been slightly forgotten about - but they are vitally important to the organisation's future. One Fifa insider believes it would be a "disaster" if measures to clean up the governing body fail. Specifically, Fifa wants members to agree to term limits for top officials along with disclosure of their salaries. Responsibility for everyday business decisions will be removed from the "political" representatives of national associations. The "executive committee" will be disbanded. In its place will come a new 36-member Fifa council, which will include a minimum of six women, to set global strategy. The day-to-day running of Fifa will pass to a new "general secretariat" - equivalent to a corporate executive board - and the secretary general, effectively the CEO, will be a powerful position. The checks and balances will be carried out by a series of committees, the most important of which will be the fully independent audit and compliance committee. Fifa wants the regional confederations and national associations to mirror their efforts over time and they will place immediate new demands on them, such as annual audits. Media playback is not supported on this device You would think so given Fifa's recent history. However, officials aren't taking any chances. The proposals need 75% approval to be passed. Acting president Issa Hayatou has been very active in spreading the message about the need to adopt the raft of proposals. Hayatou was censured by the International Olympic Committee for his part in the ISL scandal - where the sports marketing
summary: Football's crisis-hit world governing body Fifa will meet in Zurich on Friday and elect a new leader to try to take the damaged organisation forward into a new era.