I've long warned of the tendency of identity politics to cause infighting within the left-wing. Do you really think on the cusp of beating the Tories out of Government now is the time for partisan posturing? By all means let every reactionary young faux-liberal head for the hills at the first sign of not having their particular niche interest group attain absolutely everything they want within the first five minutes of discussion. That's pretty much how to guarantee we'll have another decade of Conservatives.... the left wing is a broad church and 'abandoning the Labour Party' is akin to progressives punching themselves in the face and calling it a victory.