Swing the Vote, an independent action commitee which is working to defeat John McCain, has rolled out this elections sign campaign. The central feature of the sign? McCain's name, with the "Cain" crossed out and replaced to spell "McSame":

Swing the Vote is known for producing provocative signs that pack a strong message into a small space. In 2006 their "Stop Bass, Stop the War" signs tied then Congressman Charlie Bass to his war votes; the idea this election is to tie McCain firmly to Bush:
There is no word on how many signs will go up, but if past history of Swing the Vote is any guide, there will likely be very broad coverage throughout New Hampshire's major roads.
More information is available at Blue Hampshire.