Rubio's only chance is Cruz dropping out. Cruz's only chance is Rubio dropping out. Neither man, though, is about to drop out -- and by the time one of them does, it will likely be too late to stop the Trump juggernaut.
The extremist faction is the Republican party (not whatever John Boehner or John McCain are supposed to stand for); the extremist faction is the ruling class's preferred direction for American politics in the near future, as unimaginable as it might seem today.
The most significant moment in Obama's unprecedented deficit address came not in an original announcement or last-minute proposal, but in the president's request that Americans actually get up, get involved, and ask Congress to lay off the insanity.