A friend of mine just sent in email a great quote from H. L. Mencken that great curmudgeon and political observer of the early 20th century. The friend verified this quote in Snopes. Here's the quote:
As democracy is perfected, the office of president represents, more and more closely, the inner soul of the people. On some great and glorious day the plain folks of the land will reach their heart's desire at last and the White House will be adorned by a downright moron. – H. L. Mencken
If that doesn't bring someone to your mind, you haven't been paying attention. ;-).