Michele Bachmann, Newt Gingrich, Hermann Cain. Rick Santorum wanted to ban them. Etc. All with predictable results. This isn't to say they never used telepromp

Michele Bachmann, Newt Gingrich, Hermann Cain. Rick Santorum wanted to ban them. Etc. All with predictable results. This isn't to say they never used teleprompters in their life; just that when they were running for the nomination, it was a useful cudgel to bash Obama and implicitly Mitt. That's why they were known as pretty gaffe-prone candidates.