The super PACs backing Cruz’s presidential run have yet to reserve any TV time in the early primary states – or anywhere else – despite a combined $38 million warchest that ranks second only to Jeb Bush’s $103 million operation. The total absence of ads has created confusion and growing consternation inside the Cruz campaign, which cannot legally communicate with its allied super PACs and has had to watch as their rivals lock in tens of millions of dollars in ads before prices spike, as they typically do as elections near. “I assume they’re waiting so their media buyers make...