The Harris campaign has released a series of ads targeting Donald Trump, focusing particularly on his preoccupation with crowd sizes. One ad, titled 'Crowd Size,' features clips from former President Barack Obama's speech at the Democratic National Convention, mocking Trump as a '78-year-old billionaire who has not stopped whining about his problems.' The ad juxtaposes footage of Trump's sparsely attended rallies with large, enthusiastic crowds at Harris' events. The campaign aims to highlight the stark difference in energy and support between the two candidates. The ad is being aired nationally and specifically targets Fox News viewers, as well as key locations like West Palm Beach, Florida, and Philadelphia, where the debate is taking place. This strategic move is intended to rile Trump ahead of the debate and underscore the choice voters face between Harris' policy-driven campaign and Trump's self-obsession.