The best reason to vote Tory is that you hate foreigners of all descriptions.
The second is, if you are a tax fiddler, you know they will never crack down on it.
A lot of people are impressed by their rhetoric—just that. Not everyone has a deep, inquiring mind. They like 'straightforward' talk. So when 30p Lee says refugees should fuck off to France, it hits a chord. For it's how they tend to think. Similarly, any criticism of the state of the country is met with 'If you don't like it here, fuck off to the EU.' That they themselves ended that option for most people does not occur to them. It is a matter of faith that 'anyone with anyone about them' is still free to emigrate to any country they choose.