Well, it seemed like a good idea at the time. Like Watergate.
According to the experts, former CIA
http://www.freerepublic.com/focus/news/3414444/posts?page=1#1
From the above article, dissected by former CIA deception experts :
“...we were struck by the volume of deceptive behavior that we identified in these statements.
Behaviorally, when the facts are the ally of an individual, he or she almost always tends to focus on the facts of the matter at hand.
In this case, if the key fact was that he had not had these affairs, Cruz would almost certainly have been much more strongly focused on the denial. That is, he very likely would have made a point of explicitly stating something along the lines of, “I did not have these affairs.”
>>>>Ted never categorically denies having the affairs, does he?<<<<