Via Politico, skip to 12:00 of the clip below for the key bit. Oh, it’s on. Or is it? Normally, a candidate for president claiming that he’s going to peel away his opponents’ supporters and win the nomination would be so banal that it wouldn’t qualify as news. It’s the ultimate “dog bites man†story. Of course Cruz believes this. If he didn’t, why would he be running? But these aren’t normal circumstances. Cruz is the only Republican in the field who has yet to utter a critical or discouraging syllable about Trump, part of his talk-radio-ish strategy not...