Trump's economy approval rating sinking in new poll

All right, we want to turn now to some new polling and some troubling signs for President Trump, even within his own party. His approval sinking as more and more Americans disagree with his handling of one of his signature issues, the economy. So, what impact could that have on voters in the midterms now less than a year away.Our NBC News chief data analyst, you know him, Steve Cornaki, is live tonight with us at the big board. Steve, let's start with the approval rating. Zoom zoom out and tell us what's go ...