You can easily judge the character of a party by how it treats those who can do nothing for it.
That said, do I believe that tactical voting can make a difference? Yes, I do.
Tactical voting is not – as some Tories claim – committing voter fraud by for example voting in two towns. Tactical voting means that you vote for the non-Conservative candidate who stands the best chance of getting elected in your constituency. Because even a marginally better candidate can still help make a real difference.