The leaders of the UK's seven major parties will go head-to-head at ITV's studios in MediaCityUK in Salford, it has been confirmed.
Conservative leader David Cameron, Labour's Ed Miliband, Nick Clegg for the Lib Dems, Nigel Farage for Ukip, Nicola Sturgeon for the SNP, Leanne Wood for Plaid Cymru and the Green Party leader Natalie Bennett will answer questions from the studio audience, as well as debating contentious issues between one another.
Each of the leaders has been allocated a podium lit with appropriately-coloured lights, and arranged in an order determined by drawing lots.
They will all be given one minute each to answer four major election questions submitted by audience members and ITV viewers, and chosen by an experienced editorial panel.
The questions will not have been seen by any of the leaders ahead of time.Then, the topic will be opened for up to 18 minutes of debate.
The order that each will make their opening and closing statements has also been determined by drawing lots.
Green Party leader Natalie Bennett will be the first speaker of the night, and Tory Prime Minister David Cameron will be given the final word.
The 200-strong audience has been specially chosen by polling company ICM to be broadly representative of the UK, and is politically balanced.
Around 80% will be made up of voters who have expressed a voting intention, while 20% are "undecided".
After the debate, presenter Mark Austin will anchor ITV News at Ten from the debate studio with analysis from Julie Etchingham, while political correspondent Romilly Weeks will report live from the 'Spin Room'.
Groups of undecided voters will also contribute their reactions to the debate.Following the regional bulletins, ITV News political editor Tom Bradby will host the first of the new series of political panel show The Agenda, with guests including comedian Rory Bremner and CNN's chief international correspondent Christiane Amanpour.
Have a sneak peek at the set of tomorrow's leaders' debate: