On the third day of the Democratic National Convention in Philadelphia. US President Barack Obama showed his support to the party's presidential nominee Hillary Clinton. 

He said Clinton is a candidate who sees an optimistic future and warning against what he called the "deeply pessimistic vision" of the Republican rival Donald Trump. Obama urged US voters elect Clinton, calling her the most qualified person ever.

"Even in the midst of crisis, she listens to people and she keeps her cool and she treats everybody with respect. No matter how daunting the odds are, no matter how much people try to knock her down, she never ever quits. That is the Hillary I know. That is the Hillary I know. That's the Hillary I've come to admire and that's why I can say with confidence there has never been a man or a woman, not me, not Bill (Clinton), nobody more qualified than Hillary Clinton to serve as president of the United States of America," Obama said.