Support WBURThe 8 Key Places That Will Explain The 2020 ElectionAmita KellyFebruary 26, 2020 ShareMilwaukee (left), Pueblo, Colo., and Charlotte, N.C. are three of the locations NPR's Where Voters Are project will highlight throughout the year. (Eric Baradat/AFP, Kevin J. Beaty for NPR and Daniel Slim/AFP via Getty Images)