Left-wing MP Jeremy Corbyn has thrown his hat into the ring to become Labour leader.
Corbyn, MP for Islington North since 1983, is well-known in the Labour party for his hard-left views. He's now trying to convince MPs to nominate him as a leadership candidate, warning that the other four – Andy Burnham, Liz Kendall, Yvette Cooper, and Mary Creagh – are just too similar.
But if he doesn't get 35 nominations from MPs by Monday, he's out of the race. Here's who he is and what he stands for.
He wants to renationalise the railways and energy industry.
Corbyn has long railed against the privatisation of key British services. He wants to see the railways brought back under public control, along with the water, energy, and postal services.
He has also called for the end of all privatisation in the NHS. In a left-wing policy document produced before the general election, Corbyn and other Labour MPs warned: "The sell off of our national assets has been a national scandal in which large corporations have ripped off the general public and profiteered at our expense."
He wants to introduce a living wage of £10 an hour.
Corbyn believes the Tories have created an economy based on "low pay and insecurity at work" – and wants to see the minimum wage raised from £6.50 to £10 an hour. He is also demanding the end of cuts to public services and a bigger effort to tackle tax evasion.
He wants Britain to stop going to war.
Corbyn has demanded a "radically different international policy" based on dialogue, not warfare. He wants the government to recognise "that all human life is precious".
As chair of the Stop the War Coalition and vice chair of the Campaign for Nuclear Disarmament, he's spoken at countless anti-war rallies and protests. He was vehemently opposed to the Iraq War and has long accused Tony Blair of ordering an illegal invasion in 2003.
He wants to build half a million council houses.
Corbyn has long spoken out about homelessness, overcrowding, and high rents, particularly in London. He wants to see far more social housing and introduce rent controls. He also wants councils to have the right to buy properties left standing empty for more than six months.
He wants to axe the bedroom tax and bring back a key benefit for disabled people.
Corbyn believes that welfare has been under "constant attack" from the Conservatives. He's sick of benefit claimants being labelled as "scroungers and layabouts". He would immediately abolish the bedroom tax and bring back the Independent Living Fund, which helped people to live in their own homes and communities.
He has a regular column in the Morning Star, a socialist newspaper.
Last month he wrote about thousands of refugees dying in the Mediterranean Sea as they try to escape wars "being conducted in the name of Western militaristic adventures".
He supported the now legendary "pigeon bombs" motion.
It emerged in 2004 that during World War II, British spy chiefs secretly considered using pigeons as flying bombs. The late Tony Banks, a Labour MP and keen animal rights activist, tabled a House of Commons motion condemning human beings as "obscene, perverted, cruel, uncivilised and lethal".
It also "looked forward to the day when the inevitable asteroid slams into the Earth and wipes them out, thus giving nature the opportunity to start again". Corbyn signed it, along with fellow left-winger John McDonnell.
In 1999 he campaigned for the late Chilean dictator General Augusto Pinochet to face trial in the UK.
Pinochet was long accused of human rights abuses linked to the murder, kidnap, and torture of thousands of people following his military coup of Chile in 1973. Corbyn had pushed for him to be tried in the UK for the alleged murder of British man William Beausire – but his bid was ultimately rejected.
Pinochet died in Chile in 2006, aged 91. He was never convicted of any crime.
He's won Parliamentary Beard of the Year a record five times.
Corbyn first won the prestigious award, set up by the Beard Liberation Front, in 2001. He later won in 2007, 2011, and 2012 – and last year came top for the fifth time, beating then Respect MP George Galloway into second place.
Emily Ashton is a senior political correspondent for BuzzFeed News and is based in London.
Contact Emily Ashton at email@example.com.
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