Now that the election is over with, there is only one, on the center of my back glass:
If the mood strikes me, I will certainly add another sticker.
I refuse to be cowed by the fear of vandalism, and I don't give a rat's sphincter if a liberal gets road rage* from my sticker.
*(They're usually unarmed, anyway, and I can outrun them easily)
In Texas, you are not required to run.