Guam
Although Guam has no votes in the Electoral College, it has held a straw poll for its presidential preferences since 1980. In 2008, their ballot included Barr, McCain, and Obama. On July 10, 2008, the Guam legislature passed a law moving that poll forward to gain notoriety for Guam's election. The legislation was eventually vetoed.
Read more about this topic: List Of Candidates In The United States Presidential Election, 2008, Ballot Access