Polling Update: McCain, Mueller, Midterms and More

President Donald Trump often refers to polls, but just how accurate are his tweets about them? What will have a larger effect on midterm election outcomes -- presidential approval or economic confidence? How many Democrats react positively when they hear the word "socialism"? Frank Newport and Gallup Senior Editor Lydia Saad discuss the trends on these issues and more. Gallup has polled on Americans' views of the late Sen. John McCain for decades -- Gallup analyst Andrew Dugan breaks down the trend in McCain's favorability. Later, what percentage of Americans approve of labor unions?