By Jenevieve Treadwell Immigration has divided the Tory party, but with nine out of ten constituencies wanting lower immigration, Labour will not be able to escape the issue either, writes Jenevieve Treadwell Immigration is tricky for the Labour Party. Unlike the Conservatives’ voter base, which is overwhelmingly sceptical of immigration, Labour’s electoral coalition is split between their 2019 supporters – only 20 per cent of whom think it’s a top issue – and their new converts – 40 per cent of whom think it’s one of the top issues facing the country, according to centre-right think tank Onwa…