The first half of this debate has been an absolute trainwreck. Almost everyone on the stage (with the possible exceptions of Jeb Bush and Ted Cruz) has come off as more unlikeable than they were when they started. The Federalist's Sean Davis I think has the best summary of the first half of the debate tonight and what is happening to the Republicans on stage.

 

There's clearly a tremendous amount of bad blood left over from Iowa and the candidates are not letting concern over the value of the Republican brand in general to get in the way.