Along the lines of what trojan wrote - I recap -
YOU VOTE FOR A POLITICIAN, YOU GET A POLITICIAN.
The problem would seem with the latest government having been in power for only a relatively short period and having done so much to unravel all the work - some good, some not so good work of the previous government is how can any party say with confidence that they can get anything back in shape?
Bit like - how far do you unroll a ball of string before it isn't worth rolling up again?