http://www.washingtonpost.com/wp-dyn/content/article/2008/01/03/AR2008010303824.html
https://www.washingtonpost.com/news/the-fix/wp/2016/02/01/the-amazing-declines-of-the-last-two-iowa-caucus-winners-mike-huckabee-and-rick-santorum/
. Cruz is not showing any sign of decline, Trump owns the decline line for the foreseeable future.
He declined all day yesterday.