Some do. I have seen people come and go from senior positions - one was good at the politics but not good at his job - our company is small enough that he was 'found out' as it were and replaced. However in larger corporations if you get someone that is good at playing the game rather than good at their job... well that's a different matter.
I wonder at the top bankers - which camp do they fall into. Some must be competent I hope but others will just be political animals and know how to scratch the right backs. With politicians, how does a good politician ever get elected - they have 1)to pick the right party 2)Appeal to the lowest common denominator in their constituency.
I struggle with Ed but could see myself voting for David Milliband - why?? I am educated and read the manifestos come election time and do my best to pick on policies - yet I am aware that the personality of the leader of a party does sway me. If I am aware of this and yet still let myself be swayed by this, god help a good politician who can't put on the right 'smiley face' for the general public to vote for them.