A growing divide within the Democratic Party is emerging as progressive candidates inspired by Zohran Mamdani's recent mayoral victory gain traction in key congressional races across the country. These candidates, often backed by prominent progressive groups and figures, are challenging both Republican incumbents and establishment Democrats in battleground districts from California to Colorado and New York. Their campaigns emphasize issues like affordability, healthcare, and shifting political power away from the establishment toward working families. As these progressive challengers gain endorsements and fundraising momentum, Republican strategists warn of a 'battle for the soul' of the party, while Democratic leaders highlight their focus on economic issues and support for everyday Americans.