An office worker watches a video made in 1991 and posted on YouTube, featuring the US Republican Party Presidential hopefull Herman Cain performing a version of John Lennon’s song “Imagine” with changed lyrics, on October 18, 2011 in Washington, DC. Cain was CEO of the Omaha-based restaurant chain Godfather’s Pizza at the time of his recording release. The latest opinion polls give long-time front-runner Mitt Romney 26 percent for the Republican presidential nomination, with Cain only one point behind at 25 percent, well ahead of the next-placed Texas governor Rick Perry. AFP PHOTO/Mladen ANTONOV (Photo credit should read MLADEN ANTONOV/AFP/Getty Images)
