Who is Dennis Daugaard? I think you're correct that Hersheth would be a formidable candidate in a special election, she could probably beat Rounds if he ran himself or any other Republican. Hopefully, Rounds, who is reportedly good friends with Johnson?, would put partisanship aside and appoint a Democrat to the seat. The people of South Dakota chose a Democrat at the last election and it would be subverting their will to replace a Democrat with a Republican. The people of the United States voted in November to give the control of the United States Senate to the Democratic party, and their votes should be respected.
And you really think a Democrat would do the same thing in that situation.
I cannot know that can I? But instead of justifying what the Republican Governor of South Dakota will probably do like you are, I would condemn a Democrat who appointed a Democrat to a seat that had elected a Republican in the last election.