From MTV News:

"There have been a lot of firsts in the 27-year history of MTV, but beginning Wednesday night (July 23), the channel will begin airing something it never has before: a political advertisement. "Both Ways Barack," the attack ad from conservative group Let Freedom Ring, takes aim at presumptive Democratic presidential nominee Barack Obama for what it calls a history of trying to take opposing positions on the same issue.

The 30-second clip opens with a folksy-voiced narrator claiming, "People are saying that Senator Obama's recent changes of position have made him a flip-flopper." Newspaper headlines appear on the screen, reading, "Obama aide signals shift on Iraq troop withdrawal," "Shift on war hits Obama's liberal base, " "Obama's Enigma" and "Obama's Changes Raise Issue: Can You Believe Him?"