Yep. Congresswoman Noem is definitely from South Dakota

From the Hill:

When we inquired about any potential future in the broadcast booth, Noem replied, “Who knows! I get pretty animated in games like the Seahawks-Packers matchup because as a [Minnesota] Vikings fan, I have seen my fair share of tragic mistakes leading to a loss.”

Read it here.

I think the statement about the Vikings says it all.  You can easily identify South Dakotans because we all watch the Vikings blow it, again and again.