President Barack Obama has widened his lead over Republican US presidential challenger Mitt Romney following the Democratic National Convention, according to a new poll.
The latest daily tracking poll by Reuters/Ipsos showed Mr Obama had a lead of 4 percentage points over Mr Romney.
Of 1457 likely voters surveyed online over four days, 47% said they would vote for Obama if the November 6 elections were held now, compared with 43% for Romney.
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