CNN

FROM CNN's Jack Cafferty:

Probably wasn't the best weekend ever for Hillary Clinton.

Her campaign gave the boot yesterday to one of her top aides, Mark Penn, after it was revealed that he was working on behalf of a trade deal with Columbia that she's against.

Penn's departure comes as Clinton trails her rival Barack Obama in pledged delegates and the popular vote and as Obama continues to cut into her lead among superdelegates. Obama is also closing in on Clinton in the ever-important state of Pennsylvania; he's narrowed her onetime lead of more than 30 points to an average of just 7. One poll even shows the two tied.

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