Ron Paul was really milking that Kelly Clarkson endorsement at a Rock The Caucus event at Valley High School in West Des Moines on Tuesday, POLITICO’s Juana Summers reports. “Does anybody here know the name Kelly Clarkson?” the Republican presidential candidate asked the high school students. Paul, admitting he didn’t know much about the “American Idol” winner, says his supporters did make her record sales skyrocket after she came out backing his campaign.