Mitt Romney urged voters to help him rebuild the US economy and create millions of new jobs, asking them to overcome their disappointment in and join him in restoring the promise of America.
In a high-stakes speech accepting the Republican presidential nomination, Mitt Romney said he would work to unify a divided country that had lost faith in President Barack Obama.
His speech was seen by a television audience in the tens of millions, with some voters getting their first extended look at the former Massachusetts governor.
Mr Romney and Mr Obama have been running close in polls, but the convention so far has given Mr Romney a boost. The latest Reuters/Ipsos online poll showed him moving into a narrow lead over Obama - 44 percent to 42 percent among likely voters.