1. I need a job, and I might as well go to the very top. Fortunately, I don’t know of any candidate meeting this description who ever made it anywhere close to the White House. 2016 example: Carly Fiorina.
2. I have a calling to be President. Most people who feel this way do so practically from birth, and live their lives accordingly. 2016 example: Ted Cruz.
3. I don’t care about personal ambition; I’m just a vessel for an ideology that will help the country. 2016 example: Bernie Sanders.
4. It’s all about me and my ego. I’ll be the most important person on the planet! There’s just nothing like having the band play “Hail to the Chief” when you pop out of Air Force One. 2016 example: Too obvious to mention.