This is a very important development in campaigns about which I plan to write more:

The growing number of misrepresentations appear to reflect a calculation in both parties that shame is overrated, and that no independent arbiters command the stature or the platform to hold the campaigns to account in the increasingly polarized and balkanized media firmament. Any unmasking of the lies or distortions, the thinking goes, rarely seeps into the public consciousness.

But an interesting question unfolding is whether there is a tipping point at which a candidate becomes so associated with falsehoods that it becomes part of his public persona — which hampered Vice President Al Gore during his run for president in 2000, when his misstatements on the campaign trail were used to stoke the perception that he could not be trusted in general.