Vice President Kamala Harris is experiencing a surge in support, leading former President Donald Trump by margins of four to nine percentage points in battleground states like Michigan, Wisconsin, and Pennsylvania. This shift follows President Joe Biden stepping aside and Harris naming Minnesota Gov. Tim Walz as her running mate, which appears to resonate well with young and independent voters. Betting markets also reflect this momentum, with Harris now the favorite to win the White House. However, economic concerns and Trump's recent rallying efforts suggest the race remains competitive. Polling experts emphasize that Harris needs to solidify her lead to ensure an Electoral College victory.