I find it petty people wont vote labour because of the 1970s.
Those of us who can remember that far back can remember the catastrophe that was Michael Foot and were terrified at how Jeremy Corbyn reminded us of him. You may think the Tories are bad, but they're nowhere near as bad as Labour would have been.
One of the big problems of the Left is that they view the not-Left - the Tories in our case - as evil. Sorry but they're not. Nor are any of the main parties. I'll grant you the BNP and Sinn Fein.