Your question is loaded. First and foremost any election process no matter what country you are in is dirty and filthy. The simple notion that you have two or more candidates with different ideas precludes the notion that any type of election can be pure. Personalities and ideas clash then you add in power and money and you have a dirty mix indeed.
The only thing we can do is try to elect the people who we believe will do the best job for our nation, and if they fail or disappoint, fire them and elect someone new. This is a process; true, and will never be an end game.