With less than three weeks before the US presidential election, candidates Mitt Romney and Barack Obama are focusing much of their campaigning efforts on winning Ohio, a key swing state.

A significant number of Ohio residents blame Obama and government regulations aimed at curbing pollutants for the closure of half a dozen coal-burning plants, which they say has caused a high unemployment rate.

Al Jazeera's John Hendren reports from Steubenville, a city in Ohio that could play a pivotal role in deciding who becomes the next US president.