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Nobody would be really surprised if Theresa May quit when her Brexit plan's heading for a crushing defeat and Jeremy Corbyn walked all over her at Prime Minister's Questions.

The energised Labour leader was on fire with a couple of good one liners to add insult to injury.

When what May calls wrongly the best deal is the only deal she's offering, it is also by definition as he pointed out deftly also the worst deal.

And frictionless trade is replaced these days, he added, by friction and less trade.

The PM struggled to hide her hurt but sometimes I wonder if she's going through the motions and knows the game is up for her.

We're in a remarkable political period, when a Government is aware its favoured choice avoidably weakens the country and leaves it worse off.

Politicians usually think they're doing the right thing, whether they are or not, and feeble May lacks the strength to remove referendum shackles.

She did raise perhaps the most significant moment of the past 24 hours: Shadow Chancellor John McDonnell suddenly open to another referendum and he'd vote Remain.

Corbyn puts himself at the head of a democratic movement to avoid an historic mistake and he'd be closer to Downing Street.