Well "The Twin Cities" aren't friendly voting wise to Republican Presidential Candidates.
Two party vote 2012
Minneapolis- Obama 83% - Romney 17%
St Paul- Obama 78% - Romney 22%
That has to rank right up there with the most Democratic white majority cities in the nation.
This is another good point. The farmer's labor ideals have been big in Minnesota ever since the early 20th century. Minnesota isn't the only state we're having trouble in though. I'd say the same about Michigan, Oregon, Pennsylvania, maybe Maine, and Wisconsin and New Hampshire are looking more that way.
MI-The GOP used to win there before 1992 in Presidential Elections. Bush W. almost won PA in 2000 and 2004. NH is a swing state now and probably will always be that way. Maine- a GOP Presidential Candidate hasn't carried the state since 1988 although Bush W. did do good there I think both times. Wisconsin was close 2000 and 2004(especially-500 votes) but an R Presidential Candidate hasn't carried the state since 1984.