Tory election research found Boris Johnson was 'deeply divisive'

Research suggests foreign secretary could have negative impact after role in Brexit, with Amber Rudd scoring betterInternal Conservative research used to road-test different cabinet ministers to decide how to deploy them in the general election campaign found that Boris Johnson was deeply divisive, the Guardian has been told.A source said the findings, based on research carried out by the company run by Sir Lynton Crosby and Mark Textor, suggested the foreign secretary could have a very negative