“Country first, party second” is a mantra Keir Starmer and his cabinet have repeated since being in opposition, seeking to draw a dividing line between Labour and their Conservative predecessors’ inclination for self-destruction. But party members do matter in politics – and a key problem for Wes Streeting , one of those with ambitions to succeed Keir Starmer, is that many of Labour’s do not like him. Just before Labour’s heavy local election losses, a Compass survey of more than 1,000 members found that if they were given a free choice, 42% would pick Andy Burnham to succeed Starmer – against just 11% for Streeting. And whereas Burnham had a 44% favourability rating, only 18% felt the same towards the health secretary.…