It's easy this one.
You have a bunch of bent and greedy bastards, who mostly have the mentality of blofeld. They bribe their way into local office by lying through their back teeth. Sadly though, most of these local counsellors aren't Eton educated, so this is where their gravy train stops.
Then as time goes on, these tax dodging gits rise up through the ranks and go for county council level, whilst keep the tales of sex parties, gambling addiction and swindling tax payers money firmly tucked up in the closet. Here they become MP (no not Massive Prick, but Member of Parliment), now they can be a back bencher. Theyre the ones who go "yereer" and "aaaawwww" very loudly during Prime Mobster's question time.
Then if you get chosen by the Prime Mobster to be in the cabinet, you can really take it in. Mis-use of public funds and donations, more interesting parties and you can even get in on with another MP, like Edweena Curry, SLURP!! You can have a second home, rent it to a friend and claim the tax back, or if you can't be arsed to live in the smoke, why not get your moat cleaned round your castle and get them scummy tax payers to cough up for it?
Then it gets really serious, this is the big time - Leader of your party. Voted/bought in to this position, you get to shout at the PM to his face!! Simply follow the age old standard modus operandi by blaming the other side for everything, even your mistakes, the PM will follow suit by blaming the previous government and he's simply trying to clean up the mess left behind. But don't worry, behind the scenes you're all mates cos you all went to school together ya see. Scream your face off in rage while your back benchers try to sound important with more "yeeeers" and "aaaaww"s.
Now what happened next was quite odd. During a general election, we have a guy called Peter snow who presents a tv program explaining how the voting is going, live. He explains the very complicated system (so complicated that non if them scummy voters will understand) by means of impressive graphics, pie charts and the famous 'swing-o-meter' and makes it all sound 10 times more complicated. What we got was one lying bastard got more votes than another lying bastard, but not the majority. Therefore, one lying bastard with more votes got to be Prime Mobster, and the other lying bastard got Deputy for being the runner up.
Both these lying sh1ts got where they are with pumping the voters full of BS and then when they got in, all the promises turned to maybes and 'I honestly hope..' etc, then slid into 'I never said that' and eventually all the reasons you voted for these lying bastards have drifted off into the ether.
So, no new runway for the airport EVER (but there might be, especially come 2015 after another general election of bastards) and no rise in students tuition fees EVER (except that's the first thing that deputy lying bastard did when he got in power). On the whole of it, that's small time though, the guy before lied to the world about some country and then set about starting a war on the bent info, AND cos the UK is on the UN security council as a permanent member, he's instantly immune to prosecution as a war criminal!!! Bazinga!!
I dunno if it's the same for you guys state side, but whoever you vote in over here will screw the system for personal gain, fornicate the country up as best they can and then retire with a golden knob shake and a pot of cash. Or, if you've got enough coin and friends, you can get into the house of lords and really start raking it in, like that far bastard jabba the Prescott did.
Christ I hate politics.