Nader Off The Pennsylvania Ballot (swing state, 21 EC votes).

Nader turned in 48,000 signatures
, but examination of 1300 of those so far have turned in 75% being invalid (forged, illegible, voter not registered, or voter not registered at the address indicated). Thus, he'll only have 12,000 signatures in a state where he needed 25,000 to make the ballot.

PA has 21 electoral college votes, and is considered a swing state. Gore won it in 2000.