Beyonce, Jennifer Lopez and Julianne Moore campaign for Barack Obama

Washington: Beyonce Knowles, Julianne Moore and Jennifer Lopez have joined hands to help Barack Obama pick up the female vote at November`s (12) presidential election. The trio and other leading ladies feature in a new TV ad, urging female voters to keep Obama in the White House for another four years. "He has the story that I can tell my daughter, because it shows that no matter where you start out, you can work hard and you can do whatever you put your mind to," a website has quoted Knowles as saying in the Women for Obama video. And J.Lo added, "Women will help decide this election." The video also features Eva Longoria, Jane Lynch, Sheryl Crow, Ashley Judd and Olivia Wilde. ANI