Minnesota is both a Mississippi River state and a Great Lakes state, both of which carry industry, cities, and Democratic politics. North Dakota is little more than a barren icebox that is nearly devoid of people. My hometown of Memphis, even ignoring the suburbs, has more people than the entire state of North Dakota, and I'd hardly call Memphis a big city.
I think you guys are right. Minnesota and North Dakota are quiet different. I find the Scandinavians quiet interesting. Do they tend to be more conservative? Most of the immigrants from here were poor farmers or fishermen who had no future here. Do you have some statistics that could suggest which party the Scandinavians support? I know that there are quiet a few Danes in NE and UT as well, so I assume that they are Republicans, but I believe that the Danes in WI, MN, and IO are more likely to vote for the Democrats.