Rosa, I have 4 styles
Hope
Progress
Change
Obama
they are 13x19
I also have a larger size (probably 24x36), though I can't recall offhand which slogan it is
as Matt says, they have a yellow border
someone asked me about these last week and I explained I got them from a printer who was jobbed by the NV Democratic party (excess stock)
my suspicion is that each main office across the country got film separations and was jobbed to get their own done, probably due to the lack of a distribution system and also probably to get each state party to pay it's own costs. I never asked to that great detail and seeing as they were closing the business in Vegas at the time (2010), there's no way for me to find out more.
On heavy stock, so I only ship the smaller size flat
drop me an email sales@comic-art.com