Honestly when you vote a new president in you dont know what to expect. Bush's father I think had an average 60% approval rating for his time in the chair, which is rather high. Bush jr easily got a huge boost from his father.
As I said in retrospect I am 100% convinced bush jr would of not been voted in if we could see 10 years into the future from 2000.
Also there is no real differences in the candidates of American Politics. Red or Blue there the same moderates just tinted a little this way and that. The lobbyist and corporate interest wont allow for a candidate as different as Ron Paul and such to make any major head way. The only differences between these moderates is their stance on stuff like pot, gay marriage etc...
Its more profitable to build weapons then schools in the middle east. When it comes down to it in the end its all about that dollar. When some program does get approved for rebuilding infrastructure its riddled with corruption and pork that deeply profits some American private security force that happens to have a senator as its CEO.
But I would image EU and the UK are plagued by lobbyist also.
Trump wont be elected also. He is only doing well because he is treating this election like his own personality reality show. And interest follows drama. Plus there is a void I think in the republican race of any one that actually stands out. So Trump is taking the spot light with his antics and drama. I mean when asked about the state of the middle east and the military he says. "I'll do the military better then any one else". The guy has no chance.
A lot of the smaller elections in America normally just have 1 person running. Hell I think also in Mississippi a truck driver ended up on the ballot for governor and all he did was spend 50$ to get his name in the race. The idea is his name was first in all of the ballots so he got votes to make it to the final election.