In Iowa, Cruz rockets past Trump to retake 1st place -- with an exclamation point!

Source:  Real Clear Politics

The behinders in the 12/14-17 CBS News/YouGov poll:

• 2% - Jeb Bush (so much for that slow emergence), Carly Fiorina, Mike Huckabee, Rand Paul
• 1% - John Kasich, Rick Santorum
• 0% - George Pataki, Lindsey Graham

Other stuff:

• 53% of poll respondents say they will definitely vote in Presidential election
• 31% say their support of a candidate is "very strong -- I've decided".
• 74% of Republican primary voters say they are glad Donald Trump is saying the things he says because they need to be said (not necessarily agreeing with him)

Recent Iowa caucus posts: 
Donald Trump, Ted Cruz remain in seesaw battle for 1st in Iowa; Jeb Bush quietly re-emerges.  (12/15/2015)
Trump and Cruz duke it out for 1st in latest Iowa caucus poll.  (12/14/2015)
Ted Cruz surges to 10-point lead.  (12/13/2015)
Snatchin' it back: In one day, Cruz goes from 5-point lead to 13-point deficit in Iowa.  (12/7/2015)
Ted Cruz snatches the lead from Trump in Iowa; Carson tanking.  (12/7/2015)
Cruz makes a move to overtake Trump in Iowa; Carson continues to fade.  (11/24/2015)
Based on latest Iowa poll, Trump can say anything he wants, Carson not so much.  (11/22/2015)
It's presently a 4-way contest in Iowa.  (11/8/2015)
In latest Iowa poll, Carson falls off a cliff, Cruz continues steady climb.  (11/3/2015)
This just in: Marco Rubio does NOT have 'all the magic fairy dust'.  (11/1/2015)
'What will I write about today?' wonders William Petroski. 'How about Rick Santorum?!'  (10/30/2015)
Dear Donald Trump, Mystified about what a Seventh-day Adventist believes? Look it up! )10/27/2015)
Ben Carson regains comfortable lead in 2 latest Iowa caucus polls; Trump tweets Super PAC rant.  (10/26/2015) 
Trump, Carson tied in latest Iowa Republican caucus poll.  (10/26/2015)
Dear Donald Trump. Likely Iowa caucus voters say the thrill is gone.  (10/23/2015)
Ben Carson surges into 1st place in Iowa, tripping up Trump.  (10/22/2015)
Just when you thought likely Iowa Republican caucus voters had come to their senses.......this happens!  (10/4/2015)