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Jeremy Corbyn will face a challenge to his leadership - but who is the MP most likely to unseat him?

Angela Eagle is the Labour MP for Wallasey, and was Shadow Business Secretary until she resigned in a bid to unseat Corbyn as leader of the party.

She says she's planning to officially announce her candidacy on Monday morning.

But can she succeed where Corbyn has failed?

And in what direction would she take the Labour party ?

Here's everything you need to know about Angela Eagle

Who is Angela Eagle?

(Image: PA)

Angela Eagle is the MP for Wallasey, where she was first elected in 1992.

She was Pensions minister for a year under Gordon Brown, and was made Shadow Chief Secretary to the Treasury in 2010 under Ed Miliband.

She's one of twins, and was born 15 minutes apart from sister Maria. The pair became the first twin sisters to sit on the Government front bench in parliamentary history.

She was made Shadow Business Secretary by Jeremy Corbyn , after he was elected last year. Her appointment was a point of contention with Jeremy Corbyn's rivals, who would have preferred to see her as Shadow Chancellor, the post taken by Corbyn's right hand man John McDonnell.

She's great in PMQs

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As well as being Shadow Business Secretary, she served as Shadow First Minister, which meant when George Osborne deputised for David Cameron , she would deputise for Corbyn.

And on the occasions she's done so, she's wiped the floor with the Chancellor.

What are her political leanings?

(Image: Getty)

Angela Eagle is a party loyalist and votes with the leadership on most issues.

She's served in the governments of three Labour Leaders - Blair, Brown, Miliband and Corbyn - although she was reportedly sacked by Blair by mistake in 2002.

As a member of the Treasury Select Committee in 2008, she failed to predict the housing bubble, dismissing suggestions from the Liberal Democrats that a recession was on the way as "lurid fiction."

In opposition, she strongly criticised Take That singer Gary Barlow over claims he'd been involved in tax avoidance, and has been vocal in her opposition to the Tory Government's austerity agenda.

She opposed her leader's position, voting with the government to support the commencement of UK air strikes in Syria last year.

But her loyalty to the party and her aptitude in the House has led her to be thought of as a "unity candidate" - someone who could bring the Labour party membership, MPs and Leadership together after the crisis.

She's a big fan of The Pretenders

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Specifically, she's a big fan of Pretenders singer Chrissie Hynde.

And much to everyone's surprise, it turns out Hynde is a fan of hers, too.

In December, Hynde gave Eagle a shout out on TV, during an interview with Andrew Marr.

Stand-in host Emily Maitlis mentioned Hynde famously hating "with a vengeance" the band's biggest hit, Brass in Pocket, asking the singer which of her back catalogue she was more fond of.

Hynde said she preferred the band's album tracks and obscurities, but said you'd have to be a real Pretenders fan to know them.

She then noted - seemingly out of the blue - that Angela Eagle would probably know them.

And her sister Maria piped up too, describing it as a "perfect week" for her twin.