Donald Trump may, or at least should, face sharp questioning from two separate quarters in Tuesday night's Republican debate in Las Vegas. His opposing candidates need to target him to salvage their own campaigns, and the CNN moderators need to expose his demagoguery for the sake of the political process's own reputation.
None of the other 13 declared candidates has been able to gain comparable traction in the major public-opinion polls. As a result, Trump's domination of the Republican Party has brought its establishment, represented by center-right and moderate sentiment, to a near-apoplectic state.
The fear among these old bulwarks of the Ronald Reagan and senior George Bush administrations is that the ultraconservatism that has increasingly asserted itself in the GOP ranks has found its savior in Trump -- or he has found his political salvation in it.
While Trump enthusiasts have seized on him as their authentic voice, other party loyalists see him as a certain loser in the 2016 general election, or as a potential third-party spoiler if somehow he is denied the nomination.