The Constitution of the United States

Article II, Section 1, Paragraph 8

...I do solemnly swear (or affirm) that I will faithfully execute the Office of President of the United States, and will to the best of my Ability, preserve, protect and defend the Constitution of the United States.

Explain to me how craven political reelection gambits qualify as preserving, protecting or defending the Constitution?

Thanks to Calpundit for the link.