Ummm, the state law is setup so that if no candidate gets a majority (50% +1) in the primary, then there will be one runoff between the top two. Neither Cochran nor McDaniels got as much as 50% in the primary, hence the runoff. This is normal, not something caused by McDaniel or Cochran.
Cochran's handlers would be happy to have the result stand.
Yes, I’m aware of the requirement for a runoff. I was addressing the possibility of yet another runoff if this one is tossed out, as now looks possible.