Here is a ballot access map for the Constitution Party as of April 1, 2008:
Click on this link to be taken to ballot access maps for the major third parties.
I made these maps using photoshop, and they are based on the April issue of Ballot Access News (I received it around April 1, and added a few states in because their changed status was announced around the same time). [Because I based the map on the hardcopy newsletter, and have not proofread it against the online version, it may not match the statistics at the link if anything has been corrected or altered prior to posting the issue online].
If you don't want your ballot access tables to be one month out of date, you need to subscribe to Ballot Access News.
That is all.