Now this is a good question. Since Cameron was elected, I have mainly spoiled my ballot paper as it is the only way I have of voting for 'none of the above' as spoiled papers are counted.
In the last election, it was too important to spoil my paper as I wanted to get the Conservative party out. I didn't really want Labour either, but they are were at that time the least worst (which is a pretty dire position to be in). As it happens, voting labour in my constituency would have been akin to spoiling my paper so I had to vote strategically.
How would I like to vote? Ultimately, I would like to vote for a party who I believe will manage the economy properly, take an appropriate amount of tax, administer it properly, protect the vulnerable, spend appropriately on defence, etc etc.
Since we don't have one of those, I have no clue. In the past it was easy to make compromise as there was usually a 'close enough' option. But it really is now the least worst, there is no good. The Conservative party is still rebuilding itself, but I would struggle to ever vote that way after Brexit. Labour are not covering themselves in glory. Reform? Not a chance. Green, hypnotic boobs, I didn't think so. Lib Dem? No different from Labour in that they may or may not be least worst, but would be a wasted vote.
I really don't know. Not bothered about the system changing, just would like to see some decent politicians.