On this week's episode of 'The Sunday Show with Jonathan Capehart': On A Roll: A New NBC News poll shows Vice President Kamala Harris gaining momentum against Donald Trump, including a record jump in her favorability rating. I'll get into the story behind the numbers with Senior Political Editor Mark Murray and pollster Cornell Belcher. Defying Donald Trump: House Speaker Mike Johnson proposes a new plan to avoid a government shutdown, without including one of Trump's key demands.  And a major shakeup in the campaign staff of Trump's handpicked candidate for North Carolina Governor, Mark Robinson, after allegations of inflammatory posts on a porn site.  My Sound Off panel of Michael Steele and Steve Phillips weigh in on how this could impact the presidential campaign in the Tar Heel state. Finally, an extraordinary new book on Emmett Till's murder. Author Wright Thompson joins me to discuss why he says many of the most disturbing details have been erased by history. All that and more on “The Sunday Show with Jonathan Capehart.”