I've just posted one of the reasons he was trounced in the election. Sabotage on a huge scale from the right of the party - not the "far left" as you continue to state
Sabotage like Tory party members in disguise voting for Corbyn's nomination as party leader?
His perceived affiliation with the hard left was not a vote winner and a liability to the party's progress,
Opposition claims of hard-left sympathies stuck like sh*t to a blanket in the light of historical political leanings, a growing number of the electorate were becoming aware that the far-right had turned hard won worker's rights on it's head and actually used them to gain political advantage.
No better example is the heroic Dennis Skinner, like myself a former miner who worked tirelessly for his constituents for decades, donating his MP's salary to helping the local mining community
during the strike - unbelievably he was deselected last year by the very people he helped.
Some game changing decisions have to be made now the UK's industrial backbone and with it the strength and rights of the worker has been decimated, Corbyn was not the agent of change.