Indeed. The binding vote was the elections afterwards, in which less than 40% of the public voted Tory, giving them absolute power of decision.

I thought it was less than 40% of those who voted, not the entire population but even less.

Also a call to proportional voting would have lead to dozens of ukip and a few BNP members of parliament in the past, so it's not always a good thing even if it gives more seats to more deserving parties like Green.

Frankly, the deserve a few seats, rather than hovering at the edge of flipping the Tory party. Every time they had an actual MP he flamed out spectacularly.