Well, it wasn't exactly "campaign literature", but given the obvious political path the African communist scumbag was on since even before he landed in Chicago, anything the punk put out for public viewing may as well be viewed as "campaign literature". This was actually PR stuff put out by Ubama's "literary agent" (presumably after getting the info from Ubama himself and with Ubama's full knowledge and agreement, since the agent wouldn't have just made it up out of thin air):
Ubama was fine with this information under a few months before he decalred for the rat nomination in 2007.
Obama’s Lit Agency Used 'Born in Kenya' Bio Until 2007