No telling if we could trust Cochran to do that or not - he was certainly glad to make use of the Democrat voters. Plus, there is real concern that he is actually on the path to real senility and was pushed to be a place holder so those that committed the betrayal can replace him with their own choice. I pray McDaniel isn't through, but I don't have great hopes that he will prevail.
Cochran will do what Haley Barbour tells him to do.