It's all sewn up. These people don't get into politics for the good of the people.
Lets face it, it's pretty much impossible for the average person to get into politics. Who can afford not to work the day job when they canvas? All of these MPs tend to be inherited/married into wealth or sit on boards where they turn up one day a month whilst creaming the profits.... So that they can get a position in government, not for the salary (lets face it, the MP salary is peanuts to these folk) - but for the opportunity to grease the wheels of corruption to land more cash in their coffers.
Not a lot changes...
Whatever the party, the outcome is the same.