Emily Bazelon, John Dickerson, and David Plotz discuss the tumultuous race for Speaker of the House. They also preview the Democratic debate with special guest David Axelrod and talk about the tepid presidential campaign of Jeb Bush.    The Slate Political Gabfest is brought to you by Casper, an online retailer of premium mattresses for a fraction of the price. Casper mattresses come with free delivery and returns within a 100-day period. And get 50 dollars toward any mattress purchase by visiting Casper.com/political and using the promo codePOLITICAL.   And by Stamps.com. Buy and print official U.S. postage using your own computer and printer, and save up to 80% compared to a postage meter. Sign up for a no-risk trial and a $110 bonus offer when you visit Stamps.com and use the promo code GABFEST.    And by Bonobos. Bonobos takes the pain and hassle out of finding stylish clothes that fit. For a limited time, all new customers can get 20 percent off their first order at Bonobos.com/gabfest. Discover the difference that an expertly crafted, better-fitting wardrobe can make.    Join Slate Plus! Members get bonus segments, exclusive member-only podcasts, and more. Sign up for a free trial today at www.slate.com/gabfestplus. Learn more about your ad choices. Visit megaphone.fm/adchoices