Back on the first, I linked to a Ken Timmerman article about the Barack Obama campaign having millions in possibly fraudulent campaign donations. In that post I verified with the BHO campaign that they accept credit card-style gift cards. Those can be bought with cash and in large enough denominations that it would be possible to donate large sums of cash to their campaign. Those donations would be nearly untraceable, for instance, if it were done over the internet using one or more proxy servers.