NPR News Now covers President Trump and former President Obama's final campaign stops in key U.S. races, alongside Serbia's political earthquake as long-serving leader Aleksandar Vucic concedes defeat to student-led protests. The episode also reports on Brazil's Lula da Silva winning re-election, Venezuelan opposition leader Maria Corina Machado's return to her country, and the high environmental cost of Halloween spending. Finally, the show previews Game 3 of the World Series between the Milwaukee Brewers and Tampa Bay Rays.