New poll shows swing in key battleground states

The Harris campaign is touting its crowd sizes at rallies as a new poll shows a change in the race’s momentum in Wisconsin, Michigan, and Pennsylvania. But the campaign is also facing questions connected to Governor Tim Walz’s service in the National Guard. NBC News’ Aaron Gilchrist reports. » Subscribe to NBC News: » Watch more NBC video: NBC News Digital is a collection of innovative and powerful news brands that deliver compelling, diverse and engaging news stories. NBC News Digital features , , , Nightly News, Meet the Press, Dateline, and the existing apps and digital extensions of these respective properties. We deliver the best in breaking news, live video coverage, original journalism and segments from your favorite NBC News Shows. Connect with NBC News Online! NBC News App: Breaking News Alerts: