Rick Klein: “His rivals are smelling something – whether or not that’s coming out of his … whatever. Three new national polls show Donald Trump’s lead softening, with his fellow outsiders and even some – gasp – elected officeholders rising. Scott Walker left the race with a cry for help in dumping Trump. Trump is now at war with just about anybody in sight – Fox News, Carly Fiorina, Jeb Bush, and now Marco Rubio, his critique of whom includes his youth and his propensity to perspire. It suggests a potential inflection point in a GOP race Trump has owned virtually from the moment his got on that escalator. The frontrunner looks vulnerable – and, perhaps oddly, it’s not his policy positions or political history that matter in this equation. It’s his very Trump-ness that has him now in this position, with rival campaigns seeing signs that its novelty is wearing off.”

