The overall outcome in terms of who forms the government isn't necessarily what this is about - in fact amongst most electoral reform supporters it's accepted that a strong and stable majority government is still desirable, and as you rightly point out the actual winners wouldn't necessarily be...
That's quite a conservative example as well. The Greens this year look likely to get around 6% of the vote yet 0.002% of the seats (1). UKIP, as much as I don't like them personally, are predicted by some polls to get the same (0.002%) on the back of 15% of the vote!
Isn't the danger that the big two pick up about 70% of the popular vote, but a huge percentage of that up and down the country could be tactical voters following the same reasoning as yours? Whereas if everyone voted with conscience, our society doesn't actually want these two large parties...
Apologies for another general election thread. Genuinely interested to hear NSC's views and this must apply to many more on here.
I (like I'd imagine more people than ever before at a general election) find myself mostly attracted to one of the more minor parties. However, they haven't a chance...