The Democratic challenger will appear Friday at union hall in Duluth, Minn., while the Republican incumbent plans to stage a rally in Bemidji, Minn. They are appearing in a state Hillary Clinton narrowly won in 2016.

The Democratic challenger will appear Friday at union hall in Duluth, Minn., while the Republican incumbent plans to stage a rally in Bemidji, Minn. They are appearing in a state Hillary Clinton narrowly won in 2016.