I've always liked Hasted Hunt. They often have great shows and now they have a great, politically-supportive project.
Contact the gallery at 212.627.0006 or info@hastedhunt.com to purchase a limited edition print of Martin Schoeller's portrait of Obama taken in 2004.
The print is an 11" by 14" archival pigment print, an edition of 500, each signed and numbered by Schoeller. The prints are $250 plus shipping and handling. All of the proceeds go directly to the Obama campaign.