Strict rules revealed on who will speak and when during two-hour show . ITV draws lots to agree which podium each leader will stand behind . Just four 'substantial election questions ' will be asked during the night . ITV newsreader Nick Clegg will keep order with just on ad break .
Strict rules revealed on who will speak and when during two-hour show . ITV draws lots to agree which podium each leader will stand behind . Just four 'substantial election questions ' will be asked during the night . ITV newsreader Julie Etchingham will keep order with just on ad break .