I would like to raise some objections here.
Firstly, I have never met anyone who hasn't featured in the lower left of the graph - including confirmed Tory supporters. This leads me to question whether the system is nuanced enough to register real political differences.
Equally, the graph asks you questions about your opinions. But is politics really a matter of opinion - as opposed, say, to a matter of habits?
Finally, there is a sense in which almost every question which the test asks is itself questionable... In particular, it seems that "Dis/Agree" really means "Dis/approve of" - but the idea of politics as a matter of sentiments is already a particular kind of politics, and one which intransigent right-wingers - say, Hayek - would not accept as valid.