<p>BOOK OF THE YEAR, The Times, Guardian and Prospect<br><br><br>Was Harold Wilson a bigger figure than Denis Healey? Was John Major more 'prime ministerial' than Michael Heseltine? Would David Miliband have become prime minister if it were not for his brother Ed? Would Ed have become prime minister if it were not for David? How close did Jeremy Corbyn come to being prime minister?<br><br><br>In this piercing and original study, journal...