A few nice photo to poster images I found:
poster-gate 2010
Image by seventwentysk
Large on Black.
I made some Posters for the USSU Student Election recently, and they ended up causing a bit of a controversy (mostly on a University Newspaper website comment board).
I like to call it "Poster-Gate".
Someone even called me (although not really me, since no one actually bothered to communicate with the photographer that they were all talking about) the "campaign photographer".
These are a couple posters I threw together in response to the whole thing. My original scheme was to make a photo of myself into a poster that looked similar to the posters I made for the election, with the same slogans, etc, print off a crap-load of them and totally blanket campus in them during the night.
seventwentysk: