Here is his 'thank you letter' received today:
With voting now at an end, I want to offer my sincere thanks to you and to everyone who has been part of this amazing campaign.
Whether you helped us gain the support of your constituency party, were amongst the 50,000 who joined us at one of our 99 rallies and events, the 16,000 people who volunteered or the 9,000 who donated - or most crucially, if you have entrusted me with your vote - thank you.
We entered this contest to ensure there was a real political alternative put to the status quo of austerity and a society skewed towards the super-rich. Every one of us has been part of that - whether by sharing a Facebook post or talking about these ideas with friends and colleagues. We have put the case for the fairer, more democratic and decent society we all strive for. This work must continue.
I've been clear from the start that this campaign hasn't just been about the result that will be announced on Saturday, but about building a movement. Whatever the outcome of the ballot, I hope you'll be part of that.
Together, we have achieved so much in just a few short months. I look forward to working together with you, in whatever capacity, to argue for and bring about the change we need not just in our party, but our country and the world.