I cannot imagine that Jeremy Corbyn stands any chance of winning on 8th June.
However, he could well do better than we think. His supporters, whatever we may think of them, are enthusiastic and will use their votes, many people who always vote Labour will still vote Labour , and he will have support among at least some of the people desperately trying to make ends meet in depressed areas of the country.
On the other hand, many people who normally vote Conservative may not bother to turn out, believing that a Conservative victory with a decent majority is a foregone conclusion. We have had an election in the last two years, followed by a referendum. Many people are not interested in politics, and will have had enough.
I keep hearing that Corbyn will be a disaster for the economy. I don't know if they are right, as I am no economist, but for many people, the economy is not the most important issue. Jobs, the NHS and social care are.