I've switched to taping signs to the iside of my side windows. On the passenger side I have a Kerry sign with the tagline "AlQaeda's Choice for America" small. Most viewers don't read the small print.
On my side, I have Choose Nov2: Soros or Security. Only GOP people get it and give me thumbs up. When those on my right read the AlQaeda message at stop lights, they get crazy, lots of middle fingers.
I got the messages from here
http://www.winwithhumor.com/
In short, you've let the Democrats dictate what you say and how you say it. And you admit that it isn't effective.
Those stickers would be good, but they seriously need a proofreader at that site. Al Queda? Sorros?
Seriesly.