ARIZONABernie Sanders stumps for Hillary Clinton in FlagstaffBernie Sanders hugs NAU student Simone Green after being introduced at a Clinton-Kaine rally inside the Prochnow Auditorium at Northern Arizona University on Tuesday, Oct. 18, 2016. Many political observers believe that traditionally Republican Arizona is in play for this election.Tom Tingle/The RepublicBernie Sanders addresses a Clinton-Kaine rally inside the Prochnow Auditorium at Northern Arizona University, Tuesday, October 18, 2016. Many political observers believe that traditionally Republican Arizona is in play for this election.Tom Tingle/The RepublicBernie Sanders addresses a Clinton-Kaine rally inside the Prochnow Auditorium at Northern Arizona University, Tuesday, October 18, 2016. Many political observers believe that traditionally Republican Arizona is in play for this election.Tom Tingle/The RepublicBernie Sanders addresses a Clinton-Kaine rally inside the Prochnow Auditorium at Northern Arizona University, Tuesday, October 18, 2016. Many political observers believe that traditionally Republican Arizona is in play for this election.Tom Tingle/The RepublicBernie Sanders addresses a Clinton-Kaine rally inside the Prochnow Auditorium at Northern Arizona University, Tuesday, October 18, 2016. Many political observers believe that traditionally Republican Arizona is in play for this election.Tom Tingle/The RepublicBernie Sanders addresses a Clinton-Kaine rally inside the Prochnow Auditorium at Northern Arizona University, Tuesday, October 18, 2016. Many political observers believe that traditionally Republican Arizona is in play for this election.Tom Tingle/The RepublicBernie Sanders addresses a Clinton-Kaine rally inside the Prochnow Auditorium at Northern Arizona University, Tuesday, October 18, 2016. Many political observers believe that traditionally Republican Arizona is in play for this election.Tom Tingle/The RepublicA protester wearing a Bill Clinton T-shirt who started yelling is dragged out by security while Bernie Sanders addresses a Clinton-Kaine rally inside the Prochnow Auditorium at Northern Arizona University, Tuesday, October 18, 2016. Many political observers believe that traditionally Republican Arizona is in play for this election.Tom Tingle/The RepublicThe crowd prepares for Bernie Sanders' appearance at Northern Arizona University on Oct. 18, 2016.Yvonne Wingett Sanchez/The RepublicThe crowd prepares for Bernie Sanders' appearance at Northern Arizona University on Oct. 18, 2016.Yvonne Wingett Sanchez/The RepublicThe crowd prepares for Bernie Sanders' appearance at Northern Arizona University on Oct. 18, 2016.Yvonne Wingett Sanchez/The RepublicA protester is removed by security while Bernie Sanders speaks at Northern Arizona University on Oct. 18, 2016.Yvonne Wingett Sanchez/The Republic