Word from reliable media buying sources is that Sen. Hillary Clinton's campaign has no discernable television ad presence for at least the next two weeks. That means that Clinton's first ad lasted for a week.

One guess is that the Clinton campaign used the ad to test whether it moved numbers. Whether it did -- well, the campaign probably won't let anyone know. Suffice it to say, unless the Clinton campaign has been spending like gangbusters, they have plenty of money to run television ads right now.

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