When President Johnson delivered his State of the Union speech on January 17, 1968 he surprised those closest to him when he didn’t step down.Whistlestop is Slate’s podcast about presidential campaign history. Hosted by our political correspondent and Political Gabfest panelist John Dickerson, each installment will revisit a memorable (or even a forgotten) moment from America's quadrennial carnival. Podcast production and edit by Jocelyn Frank. Research by Brian Rosenwald. Love Slate podcasts? Listen longer with Slate Plus! Members get bonus segments, ad-free versions, exclusive podcasts and more. Start your two-week free trial at slate.com/podcastplus.Email:whistlestop@slate.comLearn more about your ad choices. Visit megaphone.fm/adchoices