Republicans are supposedly even more worried that Donald Trump or Ben Carson could win their presidential nomination. Yet the one thing they could do about it -- send a clear signal in support of a single alternative -- still hasn't happened.
The obvious choice at this point would seem to be Marco Rubio, the only true coalition-style candidate remaining in the contest. He has been steadily gaining in the endorsements race ever since September.
But compared with other cycles, Republican party actors are well behind their pace: They're mostly sitting on their hands.
Why? It's hard to explain something that isn't happening, but here are several reasons they may be holding back:
1. Perhaps these Republicans are a lot less worried about Trump (and Carson) than they appear to be. If so, they may believe the nomination will be in relatively safe hands, and may be holding out in order to retain leverage over all the candidates.