Your advice is good, but to pre-emptively remove that from contention is stupid. Why telegraph that to the enemy?
I don’t think that the concept of staying on message would be considered some kind of campaign secret.
You pick your theme(s) for the day, week, etc and you stick to those messages without letting yourself get pulled in to deeply into the ever changing topics of talk radio.
Clinton knew that there were others hammering Bush on certain issues. But he saved his attacks for the economy.
The GOP cannot win this election on the theme that Rev. Wright is a bad guy.