Heading into the vice presidential debate spotlight, Tim Walz is fighting nerves CNNAhead of Debate, Walz Is Viewed More Favorably Than Vance in Midwest, Polls Find The New York TimesVP debates may alter a close race’s dynamic even when they don’t predict the winner NPRWhat’s it like to debate JD Vance? We asked the only Democrat who has The Columbus DispatchCBS News says mics won’t be muted for VP debate ABC News