Whistlestops refer to small towns or cities where politicians visit and hold brief speeches during their campaign. The antonyms of this term are cosmopolitan or metropolitan areas, where politicians conduct rallies and have their speeches in front of larger crowds. Cities or towns with a higher population and demographics, such as New York, Chicago, or Los Angeles, are examples of metropolitan areas. These regions provide greater exposure to a wider range of people and media platforms, unlike whistlestops where the audience and media coverage are limited. Antonyms for whistlestops also include big cities, major urban centers, and urban cores.