Trump endorsement is ‘boost, but not a clincher’ in midterms: Caitlin Dickerson l ABC News
The Powerhouse Roundtable breaks down the latest news on “This Week.†SUBSCRIBE to ABC News: https://bit.ly/2vZb6yP WATCH MORE on http://abcnews.go.com/ LIKE ABC News on FACEBOOK: https://www.facebook.com/abcnews FOLLOW ABC News on…