Undominated by a central charismatic figure, and uncontrolled by a single far-left group, Left Unity is a movement that is being built from the bottom up.
The Education Secretary explains his "heated" response to last week's parliamentary defeat on Syria.
Son of former Cabinet minister Jack Straw will take on Tory MP Jake Berry, whose majority is 4,493.
As dismaying as it may be to interventionists, both parties have decided that the wisest political choice is to move on.
Six Labour MPs voted against the party's amendment on the grounds that it failed to rule out military action. How many shadow ministers would have resigned?
Cameron's decision to take intervention off the table means Miliband will never have to decide whether to support military action.
Shadow transport minister said in the debate: "I’m opposed to military intervention in Syria, full stop."
Vice-chair Michael Dugher writes to Jeremy Heywood demanding that Craig Oliver apologise and withdraw the "infantile and irresponsible" remark.
Politicians, far more than commentators, have a moral and a legal duty to proceed with caution.
Unless the PM makes further concessions to Miliband, or wins over a sufficient number of coalition MPs, he faces the prospect of parliamentary defeat.