AceShowbiz -

Jennifer Hudson has done Barack Obama a favor by appearing at the Day Four of the Democratic National Convention at Mile High School's Invesco Field in Denver, Colorado. The Oscar-winning actress and singer sang the American national anthem on Thursday, August 28 in honor of the presidential candidate.

Wearing purple dress and standing in front of the American and democratic flags, Hudson delivered her version of "The Star-Spangles Banner". She was reportedly personally requested by Obama for the performance and through her publicist, Hudson said that she was "thrilled and excited. It's a tremendous honor."

During the occasion, Obama was officially nominated as the representative of the party. He made the "American Promise" saying, "America, we are better than these last eight years. We are a better country than this. Change happens because the American people demand it - because they rise up and insist on new ideas and new leadership, a new politics for a new time. America, this is one of those moments. I believe that as hard as it will be, the change we need is coming."

Throughout his campaign, Obama has established popularity among music icons such as Jay-Z, Ludacris and Fat Joe among others.

Jennifer Hudson singing National Anthem: