People always talk about Minnesota being a lily-white state but that's kind of dated. We're still whiter than the national average yes, but as of the last Census we were only about 83% non-Hispanic white. Hennepin County went from about 80% non-Hispanic white in the 2000 Census to about 70% in 2010. At that rate it's less than 2/3 non-Hispanic white now. And just 72% of births in Minnesota in 2011 (obviously less now) were from non-Hispanic white mothers.
So regardless of any trends in the past, there's no reason to expect that to continue. Also the premise that even MN-01 and MN-08 will turn into safe R seats in just 10 years is also pretty ludicrous.
Are people actually saying that about MN-08? LOL considering Nolan survived 2014 with GP candidate on the ballot.