The Tories are split, Labour is split and some people think it just can’t go on.

Once more there is serious talk about the formation of a new political party.

This has been tried before and recent history seems to say that the odds of success are not good.

But what about now? Have the prospects changed?

What might a new party look like this time? And what chance of success would it have?

CONTRIBUTORS

Sir Ivor Crewe, political scientist and Master of University College, Oxford

David Cowling, political opinion polling specialist and former editor of political research for the BBC

Steven Fielding, professor of political history and director of the Centre for British Politics at the University of Nottingham

Jane Green, professor of political science at Nuffield College, Oxford, and co-director of the British Election Study