Kind of strange, these don’t seem like the high profile people that usually attract the nutters. Almost wonder if it was personal but apparently the guy had a whole list so that might be less likely.
In the House, and a one seat Democratic majority in the Senate with a Democratic governor.
Also, the area where these Reps are from is pretty blue. The Twin Cities metro, Duluth and Rochester are typically the big three pockets of blue, as that's where most of the states population is.