The 2025 Stamford mayoral election took place on November 4, 2025. Incumbent mayor Caroline Simmons won in a decisive landslide, defeating Republican challenger Nicola Tarzia by more than 34 percentage points.
Stamford, Connecticut experienced significant population growth and economic development since the 1990s, in contrast to most other cities in Connecticut during this time. Since its growth, Stamford has played a major role in the state's economy, with one 2022 article in the Stamford Advocate calling it "the economic engine of the state".
In the city's 2021 mayoral election, Caroline Simmons defeated incumbent mayor David Martin in a Democratic primary and went on to defeat former Major League Baseball manager Bobby Valentine. During Simmons' term, she came into conflict with a faction of Stamford's Democratic Party known as "Reform Stamford", who argued special interests such as real estate developers and construction companies had outsized influence on city government. This faction suffered numerous political defeats throughout Simmons' term, losing efforts to re-write the city's charter in 2023, and significant losses in the 2024 Democratic City Committee elections.
Every challenger to Simmons' second term claimed the city had too much development.
Official campaign websites