Leonard Read (1898-1983) on presidential election campaigns:
"Not only will [an] office-seeker resort to expediency to attain office, but, once in office, his very enterprise will prove a handicap to the nation…A man who seeks and secures public office…will try to make it a bigger and more powerful office. Government should not be so expanded…Men in government, therefore, should be those who aim at making government as unnecessary as possible. Contraction, not expansion, should be the aim."
Quote taken from Read's 1948 book, Pattern for Revolt.
The quote and the book are both discussed in the Mises blog post, "Following Leonard Read's Pattern". Have a look.
You can also read the book online in PDF format.