Sen. Ted Cruz (R-Tex.) weighed in Thursday on the Republican Senate primary in New Hampshire, endorsing a candidate other than President Trump’s former campaign manager Corey Lewandowski, who Trump has said would make “a great senator.” Cruz threw his support behind former New Hampshire House speaker Bill O’Brien on a call into a Boston-based radio show, saying he is “a principled conservative” who “knows how to produce results.” “Bill O’Brien has backbone. He is willing to stand up and do the right thing,” Cruz told conservative host Jeff Kuhner on WRKO AM 680. “I think he would make a phenomenal...