US ELECTION :TIGHT RACE FOR OBAMA AND ROMNEY

Tens of millions of Americans are voting to decide whether to re-elect Democratic President Barack Obama or hand the job to Republican Mitt Romney.

Polls are to start closing in eastern states at 18:00 EST (23:00 GMT) and a winner could become clear within hours.
Turnout is crucial, with polls suggesting a neck-and-neck race, but giving the president a slender lead in crucial swing states.
Mr Romney has continued campaigning, with a trip to the swing state of Ohio.
The importance of the Midwestern state for both campaigns was underlined by Vice-President Joe Biden whose plane also arrived in Cleveland, on an unannounced stop.