Mum-of-two Jo Cox had become a prominent Labour MP since she was elected in May 2015.
Since she was elected to her home town constituency she has made sure she has been at the centre of the community in her Batley and Spen constituency.
The 41-year-old celebrated being elected to Parliament for the first time with her two children.
She held the Batley & Spen seat in May 2015 which had been vacated by Mike Wood, increasing the majority by 2,000.On her Twitter page she describes herself as “mum, proud Yorkshire lass, boat dweller, mountain climber and former aid worker.
Just 24 hours ago she had tweeted out that her husband Brendan and children were taking part in the so-called battle of the Thames where Bob Geldof had a high profile rant against Nigel Farage.
She was born in Batley and educated at Heckmondwike Grammar School and then Cambridge University. Ms Cox was head of policy for Oxfam and an advisor to Sarah Brown and Baroness Kinnock.
Read more: MP Jo Cox shot in Birstall
She was national chair of Labour Women’s Network and a senior advisor to the Freedom Fund, an anti-slavery charity. According to the Labour Party: “Jo became the first in her family to graduate from university, finishing her degree at Cambridge University in 1995.
Listen to Jo Cox speak at the general election
Her career involved working all over the world for charities fighting to tackle poverty, suffering and discrimination. She worked with Oxfam, Save the Children and the NSPCC both here in the UK and in some of the world’s poorest and most war-torn regions.
A dedicated campaigner nationally and locally, Jo focused heavily on fighting for public services, particularly against the decision to downgrade Dewsbury and District Hospital.
She was also involved with efforts to strengthen Yorkshire's manufacturing base and in campaigns and initiatives to tackle poverty and the cost of living crisis, such as Batley Food Bank.
Jo was married to Brendan and they have two young children. She enjoyed climbing mountains, boats and running.”
She was a prominent member of the Remain campaign in the looming EU Referendum.
Jo Cox murder - how events unfolded
How events unfolded during the day
The MP in profile
Everything we know about what happened
Britain First leader says killer 'probably wasn't a member' of far right group
Jo Cox has tragically died of her injuries
Jo Cox obituary
Jo Cox's husband Brendan's statement
Police statement in full
Hero police tacked suspect despite being unarmed and not wearing stab vests
Tears and sadness at the vigil in Jo's memory
Book of condolence opened in Batley
A local campaigner
More than £1,000,000 raised for Jo
Online condolence book
Terrorism link probed
Thomas Mair charged with murder
Mair's first court appearance
"He never spoke to anyone"
Tributes from Jo's devastated family
A hero tried to save her
"A good Samaritan"
Main parties won't contest Batley and Spen seat
MPs wore white roses in Jo's honour
Hero Bernard Kenny who tried to save Jo
Tributes to JoLight sculpture created for Jo Cox memorial service in Huddersfield tonight
People pay tribute to Jo on her birthday
Mair's first appearance in crown court
MPs pay tribute in parliament
More than £1,000,000 in four days in Jo's memory
Calls for Bernard to receive the highest honour
Jo worked hard to support refugees