Martin O'Malley covers Taylor Swift's 'Bad Blood' in jab at opponents

Martin O'Malley visits 'The Daily Show'
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Washington (CNN)Democratic presidential candidate Martin O'Malley brought out his guitar Tuesday to sing about "Bad Blood" between him and his opponents.

O'Malley covered pop artist Taylor Swift's vengeful song to get back at another Democratic candidate for booking Katy Perry to sing at their Iowa Rally.
"Katy Perry, I'm told, is doing a like a benefit concert for one of my opponents in Iowa," the former Maryland governor told hosts of ABC's "The View."
The light-hearted attack was directed at former Secretary of State Hillary Clinton, who will have Perry sing at her "Hillary for America" rally in Des Moines, Iowa on October 24.
    This isn't the first appearance O'Malley has made with his guitar. Ahead of the first Democratic debate on CNN, O'Malley's campaign released a video of the candidate singing for a lucky supporter.