Manny Pacquiao, the worlds best pound-for-pound boxer, is taking on his next challenge; running for a seat in his country's Congress. <br /><br />With elections coming up on May 10, Pacquiao, who is known as the "National Fist" is seeking to deliver a knock-out blow to his rivals in the polls. <br /><br />Marga Ortigas reports from Sarangani in the Southern Philippines.
