A Gofundme page launched to raise cash for causes close to the heart of slain MP Jo Cox has raised over £300,000 in just 23 hours – already more than double the amount of the initial £100,000 raised six hours after being set up.

Donations by over 10,000 people made to the crowdfunding page will be directed towards three charities which Cox had admired and supported. The charities, which were chosen by her family, include the Royal Voluntary Service, a charity working to combat loneliness in her constituency, Hope Not Hate, who seek to fight extremism in British communities, and The White Helmets, a volunteer and rescue workers group based in Syria.

The GoFundMe page says: "In celebration and memory of Jo Cox, we are raising funds to support charities closest to her heart, chosen by her family. Let us come together and give what we can to help create that world."

Her husband, Brendan Cox has urged people to donate, tweeting: "Protecting people in Syria, tackling loneliness& fighting extremism; some of the causes Jo fought 4."

Jo Cox's fund had raised £31,000 in just three hours, but they are hoping to reach a target of £50,000. "Any cause of Jo's must be a good cause, please support it if you can." one donor wrote on the page. "We won't forget you Jo and the best way we can do that is to keep up the fight," wrote another donor.

The West Yorkshire MP was shot and stabbed on Thursday June 16 outside a library where she was holding a constituency surgery. A 52-year-old man has been arrested in connection with the incident. She was the mother of two young children.

Her husband Brendan said: "Jo believed in a better world and she fought for it every day of her life with an energy, and a zest for life that would exhaust most people. She would have wanted two things above all else to happen now, one that our precious children are bathed in love and two, that we all unite to fight against the hatred that killed her."

This was the first murder of an MP for more than a quarter of a century, and it prompted widespread grief and repulsion. As a mark of respect, campaigning for the EU Referendum has been suspended.

David Cameron Jeremy Corbyn Jo Cox Tribute
British Prime Minister David Cameron (C), Labour MP Hilary Benn (L), and Labour Party leader Jeremy Corbyn (2R) prepare to lay flowers in memory of slain Labour MP Jo Cox Oli Scarff/Getty Images

Politicians from across the political divide have paid tribute to her. Labour leader Jeremy Corbyn said: "Jo was universally liked at Westminster, not just by her Labour colleagues, but across Parliament. In the coming days, there will be questions to answer about how and why she died. But for now all our thoughts are with Jo's husband Brendan and their two young children. They will grow up without their mum, but can be immensely proud of what she did, what she achieved and what she stood for."

Prime Minister David Cameron offered his condolences to her family, describing her as "a committed and caring MP."