ROUGH CUT (NO REPORTER NARRATION)<br/> <br />STORY: U.S. President Barack Obama and Republican rival Mitt Romney spar over foreign policy in the final Presidential debate.<br/> <br />The stakes are high, with the two candidates tied at 46 percent each in the Reuters/Ipsos online daily tracking poll.<br/> <br />Presidential debates have not always been consequential, but this year they have had an impact.<br/> <br />Romney's strong performance in the first debate in Denver on Oct. 3 helped him recover from a series of stumbles and wiped out Obama's advantage in opinion polls.<br/> <br />Obama fared better in their second encounter on Oct. 16, but that has not helped him regain the lead.<br/> <br />More than 60 million viewers watched each of their previous two debates
