It's a big question in this year's election: can Democrats hang onto control of the U.S. Senate.
North Dakota is one of those key Senate races and the Democratic nominee is making no secret that she wants to distance herself from President Obama and his policies.
White House correspondent Dan Lothian reports from Bismarck, North Dakota.
As the presidential election heats up Americans still see the economy as the number one issue. But try to imagine a town with just 1 percent unemployment where they can't build houses fast enough for a surging population, and schools are struggling to hire dozens of new teachers. While much of the U.S. is struggling, Williston, North Dakota, is enjoying a boom most cities can only dream of. It's all thanks to one thing: oil. CNN White House correspondent Dan Lothian reports.