We cannot recall when there were lower expectations for a candidate than the ones that preceded Sarah Palin’s appearance in Thursday night’s vice-presidential debate with Joseph Biden. After a series of stumbling interviews that raised serious doubts even among conservatives about her fitness to serve as vice president, Ms. Palin had to do little more than say one or two sensible things and avoid an election-defining gaffe.

By that standard, but only by that standard, the governor of Alaska did well. But Ms. Palin never really got beyond her talking points in 90 minutes, mostly repeating clichés and tired attack lines and energetically refusing to answer far too many questions.

Senator Biden did well, avoiding one of his own infamous gaffes, while showing a clear grasp of the big picture and the details. He left Ms. Palin way behind on most issues, especially foreign policy and national security, where she just seemed lost. It was in those moments that her lack of experience  two terms as mayor of a tiny Anchorage suburb and less than two years as governor  was most painfully evident.

Asked about Israel, Ms. Palin reeled off her support for “a two-state solution, building our embassy also in Jerusalem, those things that we look forward to being able to accomplish with this peace-seeking nation.” Asked about the possible use of nuclear weapons, she declared “nuclear weaponry, of course, would be the be-all, end-all of just too many people and too many parts of our planet.” On Iraq, all she had to offer was the false accusation that Barack Obama wants to surrender.