Listen to this 'Talk of the Nation' topic

Every four years a slew of Presidential candidates step up to a microphone and start making promises... the majority of which can never really be kept. And this is not a new phenomenon. In an op-ed in the Los Angeles Times, Joseph Ellis tracked the first broken campaign promise back to 1800, when Thomas Jefferson promised more than he could deliver... and started a more than 200 year trend. With the candidates talking big in New Hampshire this week, Ellis predicts more of the same for 2008, and says it's almost impossible to know which candidate can make the leap from Joe Citizen to President of the United States. We'll let him explain.

Tags: Joseph J. Ellis