As the OP I can tell you that not only do I support Corbyn, I am not a supporter of the Labour Party.
As a Liberal Democrat, I do belong to the majority of voters at the last general election, who voted against this corrupt Tory party, who still got a "LANDSLIDE" on the basis of a minority of votes.
First Past The Post is only used for electing governments in two European countries - the United Kingdom and Belarus.
All the other countries in Europe are democracies - where a government can only be elected with the support of the majority of electors.
The UK and Belarus are sham democracies.
OK, you can vote, but what difference does that ever make if you live in a safe seat?
Our top priority should be making the UK a democratic country electing its government by a system of proportional representation.