July 20, 2015
WaPo: The beginning of the end of Trump
https://www.washingtonpost.com/blogs/post-partisan/wp/2015/07/20/the-beginning-of-the-end-of-trump/?utm_term=.7a708b611af0
September 17, 2015
WaPo: The beginning of the end of Donald Trump?
https://www.washingtonpost.com/opinions/the-beginning-of-the-end-of-donald-trump/2015/09/17/fb6b737e-5d53-11e5-b38e-06883aacba64_story.html?utm_term=.68b9a1d4d08c
September 24, 2015
WaPo: The beginning of the end of Trump?
https://www.washingtonpost.com/blogs/right-turn/wp/2015/09/24/the-beginning-of-the-end-of-trump/?utm_term=.7a7fe718c527
Etc..