I read a post where some guy had hooked 120 VAC to his McCain-Palin signs, and some kid was shocked while trying to steal them. That would leave you wide open for legal troubles.
However, another poster suggested that you could “anoint” your McCain-Palin yard signs with essence of poison ivy. Don’t forget your rubber gloves ;)
Here is one of the threads in chat. It probebly was a 120VAC, but just a pet fence shocker.
>>Turschak, with a degree in electrical engineering, hooked up a third sign to a power source for an electric pet fence Monday and also put up a surveillance camera.<<
See the video in reply # 38
http://www.freerepublic.com/focus/f-chat/2120000/posts?page=38#38
http://www.freerepublic.com/focus/f-chat/2120000/posts?
Low voltage transformer with rectifier powered by 120 house power delivers a designed, non-lethal voltage; i.e. Pet-fence.