The politics are mixed. ND has been reliable GOP regarding Presidential voting (Bush carried it 67% in '04) but the state has Democratic Senators.
With few Electoral College votes (3?, damnifno) North Dakota isn't important in and of itself but it can be looked at as a 'sample' of how people in the rural, inter-Mountain West are breaking.
Lots of the German immigrants actually came from Russia, so it's a rather peculiar background.
Off hand, there should be commonalities between North Dakota and rural western Iowa. Last I checked, McCain was losing that area that, again, went heavily for Bush in '04.
More support for Drew's conclusion the McCain people freakeing over the internals triggered the Palin nomination.