10c //What I don't understand is why they would vote Tory. Is it because the Tories have become Labour and adopted their policies?//
What!? The only policies Labour had were a century old, outmoded, Marxist ones. Their 'policy ' on the burning issue of the day; Brexit, was non-existent. The massive swing to the Tories was because people want, in the words of Farage, "their country back ", & the Conservatives were the only party to clearly offer it.