George Eaton is political editor of the New Statesman.
"Trigger ballots" already offer members the means to remove opponents of Jeremy Corbyn.
The high court's decision to allow new party members to vote is another boost for the frontrunner.
Sources say party leader refused to acknowledge highly critical internal analysis.
The Labour leader says £500bn of new spending would be funded by "expanding the economy and driving down tax evasion".
The Labour's leader's aim was to shift the debate, not to win the contest.
Rather than forming an alternative parliamentary grouping, MPs say they will challenge Jeremy Corbyn again if he wins.
A prime minister who vowed to be different ended up being all too familiar.
Labour MPs will neither accept Corbyn’s leadership nor abandon the party if he wins again.
Members didn't vote for him on electoral grounds and believe his opponents would fare no better.
The Prime Minister's promise to avoid border controls could collide with the imperative of limiting EU immigration.
No country has ever left the EU before, so there's no map for where we're going.
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