US President Barack Obama speaks at a rally for Hillary Clinton in Orlando, Florida on Friday."I understand that right now the polls show Hillary having a lead," said Obama to a cheering crowd. "Hold on!" he said."Sometimes when you get a lead, whether it's in sports or in politics, you start feeling good. You start celebrating too early, you start getting turnovers, you start missing some free throws," the president said."I don't want y'all feeling too good. I want you hustling all the way until the polls close on November 8," Obama said.