As usually happens with most rapid-fire movements & campaigns, the demand for Obama campaign support materials far outstrips the available supply in most areas.
That's the reason some of the more hardcore Hopemongering Cultists For Obama(tm) types created a website called
ObamaCycle.com where people whose states have already voted can pass forward their leftover campaign materials to those in states where they're still needed most.
In the course of reading some comment threads on that site, I also found some links for a variety of Obama campaign support materials that you can download and print out locally as well:
http://wnymathguy.com/delegateCommittee/ArtworkDownloads.htmlhttp://www.rebootwashington.org/downloads_main.phphttp://plushgraphics.com/obama/index.phphttp://www.flickr.com/groups/crafters4obama/pool/In addition, it's a great idea to print out copies of the official one-pagers on various issues that are available on Obama's campaign site, and pass them out to those wanting to learn more about where he stands on stuff:
http://my.barackobama.com/page/content/resourceflyers/