Vice President Kamala Harris is set to announce her running mate on Tuesday, ahead of a campaign blitz across key battleground states. Harris has narrowed her choices down to Pennsylvania Governor Josh Shapiro and Minnesota Governor Tim Walz. Polls show Harris leading former President Donald Trump nationally and in several swing states, although the race remains tight with potential third-party candidates in the mix. Harris has seen a surge in enthusiasm among Democratic voters since President Joe Biden withdrew from the race, securing her position as the Democratic nominee. Additionally, a coalition of 'never Trump' Republicans, including former New Jersey Governor Christie Whitman, has endorsed Harris, citing Trump as 'unfit to lead.' Harris' campaign is anticipated to gain further momentum with the upcoming announcement of her VP pick.