Democratic strategist James Carville has cautioned his party against complacency regarding Donald Trump's polling numbers, which may be misleading. Despite Vice President Kamala Harris currently leading Trump by a narrow margin in national polls, Carville warns that Trump traditionally under-polls when on the ballot, which could shift the dynamics significantly. He emphasized that Democrats need to win by at least three points in the popular vote to secure the Electoral College. Recent polling indicates Harris is gaining ground in key battleground states, but Trump still leads in Georgia and Nevada. Carville's comments come ahead of a consequential debate on September 10, which he believes will attract significant attention. He highlighted the importance of not underestimating Trump's electoral potential, referencing past elections where polling inaccuracies favored Trump.