I guess we will know more about what actually happened when we can see voter turnout: did people actually vote Tory or did just a lot of the country not bother voting at all. The former would suggest that the media did its job, the latter that voter apathy at having two poor options leant itself to voting for neither.
It's hard to comment sensibly without that piece of information, which I can't find any info on ATM, maybe someone else can?