From the New York Times:
Mr. Cruz and his aides believe he is uniquely suited to galvanize conservatives, pointing to his leadership of the effort to cut off funding for the Affordable Care Act — confrontational, pugnacious, disdainful of President Obama. Mr. Cruz, 42 — a Texan, a born-again Baptist and son of an evangelical preacher — also connects naturally with Christian conservatives, many of whom have become foot soldiers in the Tea Party and view Mr. Paul as too unorthodox on social issues.
Mr. Paul’s inner circle privately derides Mr. Cruz as “the chief of the wacko birds,” echoing a phrase from Senator John McCain of Arizona. And, while allowing Mr. Cruz to lead the charge on Obamacare, the Kentucky senator has quietly been reaching out to more establishment forces within the Republican Party, trying to prove to big donors and mainline Republican organizations that he is more than a Tea Party figure or a rerun of his father’s failed candidacies.