From The Bottled Hot Water Collection*:
In late May, John McCain was unable to find Bob Cashell, the Mayor of Reno, Nevada, during a town hall event. The episode foreshadowed McCain's humiliating Joe The No Show moment on Thursday:
* The Bottled Hot Water Collection™ is a series of videos highlighting the funniest oddball goofes from McCain and Palin during the 2008 campaign.