They do now. Any other terms of endearment where will be added as you offer them, but once we get past the program's limit of ten, the most witty updates will be included at the expense of those showing the least good taste.
Sanders and Angus King of Maine are independent, but they do not belong to the Independent Party. As far as I can tell, neither formally belongs to any political party, though Sanders is now running for the Democratic nomination, so maybe he is now a Democrat. So the correct answer to your quiz is Democratic and Republican. No other political parties are represented