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To get ahead in ones chosen career a long term plan is essential, our M.P. had two choices:-
1/ Dedicate all his efforts into doing the maximum good for his constituents.
2/ Dedicate all his efforts into doing the maximum good for his career by back stabbing other members of his party in the hopes that he will be thought a good egg by the powers that be.

He seems to have failed whichever of these paths he has chosen.

He's failed in 1/ obviously, because he spends over 95% of his time chasing 2/ and he's failed in 2/ because, well the main reason is because a defrosted lettuce after a sudden summer chill would be a firmer option to use for stabbing folk in the back than he could ever be.
I would rather have him praising Corbyn if I was hoping to undermine the guy than have Jones in alliance with any of my plans.