How polling works and what it says about America

A new CBS News Battleground Tracker poll puts the Democrats in a better position than Republicans to gain control of the House in November's midterm elections, but many contests are still considered toss ups. Analyzing poll numbers is the specialty of Anthony Salvanto, CBS News director of elections and surveys. He joins "CBS This Morning" to discuss the new book, "Where Did You Get This Number? A Pollster's Guide to Making Sense of the World."

Delivered by Norah O’Donnell and Gayle King, "CBS This Morning" offers a thoughtful, substantive and insightful source of news and information to a daily audience of 3 million viewers. The Emmy Award-winning broadcast presents a mix of daily news, coverage of developing stories of national and global significance, and interviews with leading figures in politics, business and entertainment. Check local listings for "CBS This Morning" broadcast times.

[milkovas]

It doesnt work. Whatcha this guy predicting Holliday as a president

[ronschueler]

Yeah just like the 2016 election who had Hillary in a landfall. lol

[ipressedabutton]

i thumbs this piece down. am not interested in these fake poll numbers. tell me some news that is important to my community instead.. try and come up with a news piece that actually affects my life.. that would be a real challenge.