Combo photo taken on April 22, 2012 shows France's President and Union for a Popular Movement (UMP) party's candidate Nicolas Sarkozy and his wife Carla Bruni (top) and France's Socialist Party candidate Francois Hollande and his companion Valerie Trierweiler. French incumbent President Nicolas Sarkozy, representing the Union for a Popular Movement (UMP) and his socialist challenger Francois Hollande topped out in Sunday's first round of presidential election, entering the run-off to be held on May 6. (Xinhua)