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What happens when politicos and pundits adopt rock, pop or country hits to pump up their constituents? With help from Bing, MSN looks at cases where politics and pop mixed, sometimes harmoniously, more often with discord.

By Mark Brown
Special to MSN Music

Artist: Tom Petty
Song: ... more"American Girl" (read the lyrics)
Public figure: Michele Bachmann

The controversy: Bachmann played the song during her ceremony announcing her candidacy for president. Within hours, Petty's management sent a cease-and-desist order (read more about it) -- and given the legal bashing John McCain took from Jackson Browne, Bachmann's camp will likely comply. Petty previously clashed with George W. Bush over "I Won't Back Down," which Bush ultimately did. Bachmann recently hit another roadblock with the band Katrina and the Waves, who banned her from using their song "Walking on Sunshine."

Bing: Watch Petty perform "I Won't Back Down"

© Rob Grabowski/Retna Ltd.; AP