I saw that shot on the live internet feed from the CBS station in Madistan that I was watching. Some one could easily be carrying that sign to show their lib street creds. I suppose they could have inserted it in real time, but I doubt it.
If you go to the Big Government.com website and look at the video of the Sarah Palin speech, you can see the Vote Kloppenburg sign at the 7:45 minute mark.
I was there and saw that sign. I thought about telling him that he missed the voting, but thought that would be uncivil. When you think about it, it is imbecilic.