(01 of25)
Open Image ModalUkip leader Nigel Farage during the BBC Challengers' Election Debate 2015 at Central Hall Westminster, London. (credit:Stefan Rousseau/PA Wire)
(02 of25)
Open Image ModalGreen Party leader Natalie Bennett during the BBC Challengers' Election Debate 2015 at Central Hall Westminster, London. (credit:Stefan Rousseau/PA Wire)
(03 of25)
Open Image Modal(Left - right) Labour Party leader Ed Miiband, Plaid Cymru Party leader Leanne Wood, Green Party leader Natalie Bennett, Scottish National Party leader Nicola Sturgeon and Ukip leader Nigel Farage during the BBC Challengers' Election Debate 2015 at Central Hall Westminster, London. (credit:Stefan Rousseau/PA Wire)
(04 of25)
Open Image ModalUkip leader Nigel Farage during the BBC Challengers' Election Debate 2015 at Central Hall Westminster, London. (credit:Stefan Rousseau/PA Wire)
(05 of25)
Open Image ModalScottish National Party leader Nicola Sturgeon during the BBC Challengers' Election Debate 2015 at Central Hall Westminster, London. (credit:Stefan Rousseau/PA Wire)
(06 of25)
Open Image ModalUkip leader Nigel Farage during the BBC Challengers' Election Debate 2015 at Central Hall Westminster, London. (credit:Stefan Rousseau/PA Wire)
(07 of25)
Open Image ModalScottish National Party leader Nicola Sturgeon during the BBC Challengers' Election Debate 2015 at Central Hall Westminster, London. (credit:Stefan Rousseau/PA Wire)
(08 of25)
Open Image ModalLabour Party leader Ed Miiband (left) and Plaid Cymru Party leader Leanne Wood during the BBC Challengers' Election Debate 2015 at Central Hall Westminster, London. (credit:Stefan Rousseau/PA Wire)
(09 of25)
Open Image ModalGreen Party leader Natalie Bennett (left) and Scottish National Party leader Nicola Sturgeon before the BBC Challengers' Election Debate 2015 at Central Hall Westminster, London. (credit:Stefan Rousseau/PA Wire)
(10 of25)
Open Image ModalLabour Party leader Ed Miiband during the BBC Challengers' Election Debate 2015 at Central Hall Westminster, London. (credit:Stefan Rousseau/PA Wire)
(11 of25)
Open Image ModalScottish National Party leader Nicola Sturgeon (left) and Ukip leader Nigel Farage during the BBC Challengers' Election Debate 2015 at Central Hall Westminster, London. (credit:Stefan Rousseau/PA Wire)
(12 of25)
Open Image ModalLabour Party leader Ed Miiband (left) and Plaid Cymru Party leader Leanne Wood during the BBC Challengers' Election Debate 2015 at Central Hall Westminster, London. (credit:Stefan Rousseau/PA Wire)
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Open Image Modal(Left - right) Labour Party leader Ed Miiband, Plaid Cymru Party leader Leanne Wood and Green Party leader Natalie Bennett during the BBC Challengers' Election Debate 2015 at Central Hall Westminster, London. (credit:Stefan Rousseau/PA Wire)
(14 of25)
Open Image Modal(Left - right) Labour Party leader Ed Miiband, Plaid Cymru Party leader Leanne Wood, Green Party leader Natalie Bennett, Scottish National Party leader Nicola Sturgeon and Ukip leader Nigel Farage during the BBC Challengers' Election Debate 2015 at Central Hall Westminster, London. (credit:Stefan Rousseau/PA Wire)
(15 of25)
Open Image Modal(Front - back) Labour Party leader Ed Miiband, Plaid Cymru Party leader Leanne Wood, Green Party leader Natalie Bennett, Scottish National Party leader Nicola Sturgeon and Ukip leader Nigel Farage during the BBC Challengers' Election Debate 2015 at Central Hall Westminster, London. (credit:Stefan Rousseau/PA Wire)
(16 of25)
Open Image Modal(Front - back) Labour Party leader Ed Miiband, Plaid Cymru Party leader Leanne Wood, Green Party leader Natalie Bennett (partially obscured), Scottish National Party leader Nicola Sturgeon and Ukip leader Nigel Farage during the BBC Challengers' Election Debate 2015 at Central Hall Westminster, London. (credit:Stefan Rousseau/PA Wire)
(17 of25)
Open Image Modal(Left - right) Labour Party leader Ed Miiband, Plaid Cymru Party leader Leanne Wood, Green Party leader Natalie Bennett and Scottish National Party leader Nicola Sturgeon during the BBC Challengers' Election Debate 2015 at Central Hall Westminster, London. (credit:Stefan Rousseau/PA Wire)
(18 of25)
Open Image ModalScottish National Party leader Nicola Sturgeon (left) and Ukip leader Nigel Farage during the BBC Challengers' Election Debate 2015 at Central Hall Westminster, London. (credit:Stefan Rousseau/PA Wire)
(19 of25)
Open Image ModalScottish National Party leader Nicola Sturgeon (left) and Ukip leader Nigel Farage during the BBC Challengers' Election Debate 2015 at Central Hall Westminster, London. (credit:Stefan Rousseau/PA Wire)
(20 of25)
Open Image Modal(Left - right) Labour Party leader Ed Miiband, Plaid Cymru Party leader Leanne Wood and Green Party leader Natalie Bennett during the BBC Challengers' Election Debate 2015 at Central Hall Westminster, London. (credit:Stefan Rousseau/PA Wire)
(21 of25)
Open Image Modal(Left - right) Labour Party leader Ed Miiband, Plaid Cymru Party leader Leanne Wood and Green Party leader Natalie Bennett during the BBC Challengers' Election Debate 2015 at Central Hall Westminster, London. (credit:Stefan Rousseau/PA Wire)
(22 of25)
Open Image ModalScottish National Party leader Nicola Sturgeon (left) and Ukip leader Nigel Farage during the BBC Challengers' Election Debate 2015 at Central Hall Westminster, London. (credit:Stefan Rousseau/PA Wire)
(23 of25)
Open Image Modal(Left - right) Labour Party leader Ed Miiband, Plaid Cymru Party leader Leanne Wood, Green Party leader Natalie Bennett, Scottish National Party leader Nicola Sturgeon and Ukip leader Nigel Farage during the BBC Challengers' Election Debate 2015 at Central Hall Westminster, London. (credit:Stefan Rousseau/PA Wire)
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Open Image ModalScottish National Party leader Nicola Sturgeon (left) and Ukip leader Nigel Farage during the BBC Challengers' Election Debate 2015 at Central Hall Westminster, London. (credit:Stefan Rousseau/PA Wire)
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Open Image Modal(Left - right) Labour Party leader Ed Miiband, Plaid Cymru Party leader Leanne Wood, Green Party leader Natalie Bennett, Scottish National Party leader Nicola Sturgeon and Ukip leader Nigel Farage during the BBC Challengers' Election Debate 2015 at Central Hall Westminster, London. (credit:Stefan Rousseau/PA Wire)