The priority has to be to keep the Tories out.
Vote Labour if its a marginal seat where the Tories may be elected and Labour are in first or second
Vote Lib Dem if its a marginal seat where the Tories may be elected and the LibDems are in first or second.
Just don't give the Tories any satisfaction from their disgusting racist campaign. And to make it even worse, Dracula supports the Redshite.