This poll from the New Statesman shows very well the difference between appealing to the base, appealing to your own voters and appealing to potential voters for your party.
Corbyn supporters are very left wing. Only 20% think competition is good, 67% want more taxes, 65% want private schools abolished and 65% want to abolish the monarchy.
Now even among firm Labour voters, their views are quite different. 38% support markets, only 38% support higher taxes, and 42% want private schools abolished.
But go out to the potential voters UK Labour needs to win, and there 58% support competition, only 19% want higher taxes and only 25% want private schools gone.
So how can Corbyn’s policies win Labour an election? Stuffed if I know.