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Ohio might not be the biggest state in the US, but since 1960 it has been known for picking the winner in presidential elections.

Incumbent leader Barack Obama and his main election challenger, the Rupublican Party's Mitt Romney, are both expected to spend lots of time and millions of dollars campaigning there - and for good reason.

It's been over half a century since anyone has made it to the White House without winning in Ohio.

Al Jazeera's John Hendren reports.

Source: Al Jazeera