I think Paul Ryan should probably be the most concerned. He managed to piss off Tom Morello:
http://www.rollingstone.com/music/news/tom-morello-paul-ryan-is-the-embodiment-of-the-machine-our-music-rages-against-20120816
"Paul Ryan's love of Rage Against the Machine is amusing, because he is the embodiment of the machine that our music has been raging against for two decades. Charles Manson loved the Beatles but didn't understand them. Governor Chris Christie loves Bruce Springsteen but doesn't understand him. And Paul Ryan is clueless about his favorite band, Rage Against the Machine."
...
"My hope is that maybe Paul Ryan is a mole. Maybe Rage did plant some sensible ideas in this extreme fringe right wing nut job. Maybe if elected, he'll pardon Leonard Peltier. Maybe he'll throw U.S. military support behind the Zapatistas. Maybe he'll fill Guantanamo Bay with the corporate criminals that are funding his campaign – and then torture them with Rage music 24/7. That's one possibility. But I'm not betting on it."
I'm a huge fan of Morello who is very active in politics. Ryan has given Morello the perfect opportunity to make his voice heard.