So, you're saying the Subject might as well have been "The Sky is Blue"?
No. "Perhaps as Soon as Tomorrow" is clearly implied, especially when read in the context of the body of the message.
The Subject, "Carson Likely to Drop Out" motivates the recipient to open the message. Read the rest of the message, and the email's intent is clear.
I'm not saying it wasn't an honest mistake, just that it's wrong for Deace to claim the email "said exactly what these news reporters were saying."
If you look at the transcript of the CNN report (which can be seen at http://www.freerepublic.com/focus/news/3392448/posts?page=121#121 ) the Cruz team’s email - subject line and message together -says exactly what the CNN announcers were saying.