"Patriotism means to stand by the country. It does not mean to stand by the President."
- President Theodore Roosevelt
"The President is merely the most important among a large number of public servants. He should be supported or opposed exactly to the degree which is warranted by his good conduct or bad conduct, his efficiency or inefficiency in rendering loyal, able, and disinterested service to the nation as a whole. Therefore it is absolutely necessary that there should be full liberty to tell the truth about his acts, and this means that it is exactly as necessary to blame him when he does wrong as to praise him when he does right. Any other attitude in an American citizen is both base and servile. To announce that there must be no criticism of the President, or that we are to stand by the President, right or wrong, is not only unpatriotic and servile, but is morally treasonable to the American public. Nothing but the truth should be spoken about him or any one else. But it is even more important to tell the truth, pleasant or unpleasant, about him than about any one else."
- President Theodore Roosevelt, 1912
And believe it or not, ladies and gents, Teddy Roosevelt was a Republican.
The nice folks at dictionary.com provide a definition of the word patriot. If you're lazy like I am, I've cut-and-pasted out the definition and the origins, though some of the high-ascii characters ain't copying over:
pa·tri·ot n. One who loves, supports, and defends one's country.
[French patriote, from Old French, compatriot, from Late Latin patriota, from Greek patriotes, from patrios, of one's fathers, from patr, patr-, father. See pter- in Indo-European Roots.]