The little watermark (lower right-hand corner) I'd seen on the first document is the same as the one seen on the Democrat Party of Hawai'i document at this link:
http://moniquemonicat.files.wordpress.com/2008/12/hawaii-response.pdf
except there's no "recycled paper" logo (with the three arrows symbol) on the left-hand side.
I believe that is a union bug. Democrats typically take their printing to a union shop. Check campaign materials.