Just shows you know nothing about how a real democracy works. The ONLY reason the UK, Canada & other countries (e.g Australia & New Zealand) don't use a simple majority is because the citizens are NOT voting for an individual to be the leader of their country. They vote for members of a political party in their respective electorates (that part the yanks get right) and the party that wins the majority of seats, either in their own rite or by forming a coalition, which the yanks also get right when it comes to the House and Senate, in the lower house of their parliament becomes the govt and the leader of the party (who must be an elected politician, not an individual who hasn't been elected to the parliament by his constituents) becomes the Prime Minister and leads the country.
The US electoral system needs to change how the President is elected by having presidential candidates stand for election in their own electorates and their respective party chooses the party leader from among it's elected members and the party with the majority in the House their party leader is automatically the President until either the party decides to change leader or the next election.