The founder of the left wing Momentum marketing campaign group has introduced he is standing down as its chief.
In an article for the Labour List web site, Jon Lansman, 62, stated the time had come to hand over to a brand new generation of activists.
“We are now a mass of dedicated activists fighting for a better world. And in this new era, it is time that a new generation of leaders put their ideas into practice,” he stated.
“That is why I have decided not to contest the forthcoming elections within Momentum and instead will hand over to a new leadership.”
Momentum grew out of the profitable marketing campaign to elect Jeremy Corbyn, a long-standing ally of Mr Lansman’s, as chief of the Labour Party in 2015.
It was credited with mobilising tens of 1000’s of younger activists, however was distrusted by many conventional Labour members who accused it of performing as a celebration inside a celebration.
The failure of Rebecca Long-Bailey, the favorite of the left to succeed Mr Corbyn, to win this 12 months’s celebration management election was seen as an indication of its waning affect.
However, Mr Lansman insisted that it had modified the celebration for good.
“Thanks to our movement, Labour can never again be the party of illegal invasions, anti-immigration mugs or support for Tory policies of austerity and privatisation,” he stated.
“The Labour Party is now much closer to being a socialist party than simply a party with socialists in it.”
He added: “We didn’t succeed in democratising the party sufficiently while Jeremy was leader, but we must not give up now. It’s now more important than ever that Labour becomes a grassroots member-led movement.”
Angela Rayner, deputy chief of the Labour Party, stated: “There is no doubt that Jon has made a big impact in politics and is a true Socialist whom has always wanted to do his best for people, he has fought injustice and inequality and will continue to do so in the future.”