If no candidate gets 51% there will be a runoff election on June 19th.
Very long lines, voters waiting two hours to vote.
Al Jazeera has an excellent English station (They just had a report on California State budget crises that was better than anything on cable or network news)
http://www.livestation.com/channels/3-al_jazeera_englishThe Guardian is running a live blog here
http://www.guardian.co.uk/news/blog/2009/jun/12/iran-middleeastThe Telegraph analysis is that the higher the number of voters the worse it looks for Ahmadinejad.
http://www.telegraph.co.uk/news/worldnews/middleeast/iran/5515813/Iran-election-unprecedented-turnout-boosts-challenge-to-Mahmoud-Ahmadinejad.htmlEdit to add
Al Jazeera reports:
Polls have been extended a second time (both legal and not unprecedented)
Poll officials are predicting a 70% turnout.
AP confirming polls extended to 8 PM Iran, 11:30 AM EDT. Polls now officially closed but Iranian tradition is to allow anyone in line to vote.