I am bemused and dumbfounded that the candidates striving to become the next prime minister (Report, 29 May) believe they can individually unite the country. I suggest they start in their own backyard. The parliamentary Conservative party is riven with division – and if they are unable to present a united front, how do they imagine they can unite the citizens of Scotland, England, Wales and Northern Ireland?Helen ForsterLongniddry, East Lothian • With regard to the Tory candidates for prime…