A lot has been written about street artists promoting the candidacy of Barack Obama, but how about the GOP side? A search at Flickr shows only a few photos of street art that could be construed, in a pinch, as supporting the Republican ticket (John McCain as Billy Elliot, a fuzzy [if endangered] polar bear with a McCain/Palin sign, a “John McCain for Grandpa” sticker) or opposing Obama (a Nobama stencil, graffiti on a train that reads “No affirmative action president“). There’s little ambiguity, though, in street-art depictions of Sarah Palin, which tend to show the VP candidate with devil horns. One new project shows a “truly frightening” rendering of Palin that cops Shepard Fairey’s iconic designs for Obama posters.