As I’ve noted on several previous occasions, Jeb’s immediate problem is to dispose of Marco Rubio and win the Romney Coalition subprimary, but he doesn’t have many plausible lines of attack. Rubio’s most vulnerable spot is his previous support for immigration reform, but Jeb is not in a position to make that case. Ted Cruz, however, can and will make the argument forcefully.
Cruz is competing with Donald Trump in the Reagan Coalition subprimary. He needs to reduce Trump’s support significantly without disparaging him or his followers, whom he needs to inherit. The most obvious person to take on Trump, given his pedigree, ideology, and available funds, is Jeb Bush.
Could the two campaigns enter into a non-aggression pact?