Now I know that this is a long shot that M. Rounds would primary Representative Noem for the Republican nomination House of Representatives in 2012, but lets play the idea out.
Noem is having a hard time convincing the conservative base of South Dakota Republicans that she is doing the things that she promised them. Her voting record mirrors more of the mainstream Republican Party than her promises, which could make her weak against a well funded Democratic candidate. With the Argus Leader showing skepticism to her dust regulation, Noem looks like to be in a weaken state policy wise. This would be a time to put a more party friendly candidate in instead of Noem.
If M. Rounds would primary Noem, we would see and epic battle that would be interesting. This battle would be against the established Republican against the one term newcomer( I know Kristi has been in the State House, but this is a reference is to statewide office.) who has not kept her promises.
For Rounds this would be a great time for him to enter because of his disdain towards the Corps of Engineers. For example if he would beat Noem, he would have an easier time facing a Varliek or Barth. Unlike Noem who will probably have a close race. If Rounds would win and the Republicans kept their majority, he could then be placed on a committee that did over site of the Corps. He could have more power regulate the Corps. With him doing something in 2012 would make the possible 2014 Republican primary for Senate easier. Rumors in Republican circles see this coming, so why not test Noem in 2012 with petition of candidacy?