From my experience politicians are much more uncomfortable being made fun of than they are being preached at and screeched at - you know and the soapbox routine. They're much more uneasy knowing they're a target of ridicule.

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The reason that minorities and women don't have a better shot at getting elected to the Senate or to statewide office is because the campaign finance rules are so skewed as to make it very difficult for non-traditional candidates to raise the money necessary to get elected.