Politics is full of examples of politicians doing the exact opposite of what their supporters want. For example, it's well reported that most people would vote to restore the death penalty, but the politicians are never going to do that. You don't always have to do what your electorate want, especially if you think that they are wrong.
At the end of the day most of Labour's core brexit voters would vote Labour no matter what. It's not them that Corbyn has to pander to if he wants to win an election, it's everyone else. He could probably win the next election if he campaigned on a "No Brexit" platform, but he has never liked the EU.
Politics is full of examples of politicians doing the exact opposite of what their supporters want. For example, it's well reported that most people would vote to restore the death penalty, but the politicians are never going to do that. You don't always have to do what your electorate want, especially if you think that they are wrong.
At the end of the day most of Labour's core brexit voters would vote Labour no matter what. It's not them that Corbyn has to pander to if he wants to win an election, it's everyone else. He could probably win the next election if he campaigned on a "No Brexit" platform, but he has never liked the EU.