Yet he garners majority support amongst ordinary party members/supporters. Shows how out of touch the PLP is with the party's grassroots.
Or how out of touch the grassroots is with the mainstream British public, perhaps?
There are 250,000 Labour party members. That's a tiny fraction of the total electorate that Labour needs to impress in order to win a General Election.
I think it is delusional to imagine that where Ed Miliband failed, having shifted the party marginally leftward, Jeremy Corbyn will triumph by going the whole distance. But a Corbyn leadership may be an experience the Labour Party just has to put itself through, like the Foot leadership disaster in the 1980s, to have it rammed home to them how far distant they have become from the mass of people who have the power to put them back into government.