The media build them up and knock them down - Barack Obama's fate, like Democrats before him, is sealed by the corporate media.
No matter how blameless a life, how saintly the Democrat candidate, the right-wing media will paint them in a bad light - even calling them 'elitist' and 'self serving' for having lived within the media rules that allowed them to progress. Catch 22!
Barack Obama may be to the right of new Labour when it comes to policy, but in US media circles he is painted as an 'anti-Christian', 'dangerous liberal leftie' and a 'national security risk'. No doubt even JC himself would be painted in these terms if he joined the Democrats.
So we end up with disgustingly ignorant, inept, corrupt, hypocritical and frightening Republican leaders of the most powerful country on Earth.
The world over, whether the UK, US, Italy or elsewhere, the corporate media straitjacket makes it harder and harder for Left leaning leaders to be elected. Democracy pah! Add in a dysfunctional electoral system that allows only a choice between poor and mediocre parties and bingo - say goodbye to real democracy.