A WSJ story this morning (subscription only) on the 08 candidates and YouTube contains this wonderful comparison:

YouTube acknowledges the You Choose ‘08 Channel isn’t likely to attract more than a small number of viewers. Mr. Obama’s homepage on YouTube–one of the most popular of any 2008 presidential candidates–has been viewed more than 48,500 times, and some 1,900 people have subscribed. By contrast, pop princess Ashley Tisdale’s YouTube homepage has been viewed more than a million times and has more than 13,500 subscribers.

Despite the seeming rock star-like popularity of Obama, the difference between political pop stars and real pop stars–excuse me, pop princesses–is vast indeed. Further viewing: Obama’s YouTube page is here. The YouChoose candidate page is here. Ashley Tisdale’s page is here.