What do people think about tactical voting tomorrow?

My number one goal is for the Tories to get smashed.

My constituency is typically a safe Tory seat. Polls have the Lib Dems as being very close to the Tories.

I would prefer to vote Labour, but Lib Dem wouldn't be a disaster.

The strongest candidate in my area is the Tory. Both Labour and Lib Dem are very underwhelming.

So I think I have to go Lib dem, despite the Lib Dems being neither the party I want nationally, nor the best candidate locally. That doesn't feel right, but seems necessary given my number one goal. In the same way I would be voting Tory if I lived in Clacton.