I don't read that the same way. There is no case of dropping out for political reasons. "Political reasons" is a code-word for losing. This is meant to prevent anoth New Jersey Torricelli situation, where he dropped out because he was losing badly in the polls and the Democrats wanted to prevent Forrester from winning.
Because there is no case of dropping out for political reasons, that means that the name stays on the ballot, and the candidate then loses. There is no redo of a primary.
If Cochran wins the primary in such a pyrrhic way that he has soured himself in the general election, that's just tough for Republicans. They're stuck with him. No do-overs.
That's why it's imperative now to get Cochran out and let McDaniel win while the primary election is not finalized.
-PJ
I agree, and take back the contention that Cochran dropping out "for the good of the party, even though he won the primary" gives the party a chance for a do-over. The nominee isn't forced to "run" in the general or take the office; the person is free to retire to Tahiti or whatever they want to do. But in that case, the party has no candidate in the general, even though the name is on the ballot. Write ins would not count, etc.