NBC News Signal - October 18th, 2018

On tonight’s show, we trace the spy novel-esque evolution of missing journalist Jamal Khashoggi’s story – how did we get here? As Asian-American students’ lawsuit against Harvard heads to court, opinionated undergrads debate affirmative action…and then switch sides. We go live from the president’s rally in Missoula. And we dig into the often-cited but sometimes misleading harbinger of election outcomes: polls. How much can we really trust any one poll to predict an election outcome?