Most people who contested an election never recovered politically to run a serious race again. The uninformed people don’t like what they call “sore losers” even if one were defrauded. That’s why Richard M. Nixon gave his famous pass to his friend JFK.
Reagan never contested an election. McDaniel should graciously concede and then work to win another time. Cochran’s no shoo in for election in November because the Democrat is more Conservative than is Cochran.