He comes from a very red state with isolated pockets of very Leftist Blue.
The only way to get elected there is to pretend to be a conservative Republican.
He will be primaried out of office next time he is up for election unless the Establishment wins the fight for control of the country.
The other ND Senator is Hoeven, also an Assistant Democrat who voted for amnesty in 2013 and should be primaried in 2022.