The prime minister tweeted a link to the last article written by Cox, saying: “Jo Cox’s strong voice in the campaign to remain in the EU will be badly missed.”
Jo Cox's strong voice in the campaign to remain in the EU will be badly missed. Her final article, published today: https://t.co/dDgRr2Won3— David Cameron (@David_Cameron) June 19, 2016
Cox was murdered last Thursday by a pro-Brexit "lone nut."
The race appears to be neck-and-neck after a swing to "Remain" after the murder.
“We had momentum until this terrible tragedy,” said Nigel Farage, leader of the UK Independence party, on ITV’s Peston on Sunday.