Dian McCarthy

Dian McCarthy is a public servant, former small business owner and nonprofit Executive Director running to flip a seat in the New Hampshire Senate this fall. Under Dian’s leadership, her local school board transitioned from a period of failed budgets and poor public confidence into an era of transparency and strong community support. Dian also served as the Vice Chair of the New Hampshire Juvenile Court Diversion Network Board and President of the New Hampshire Breast Cancer Coalition, where she advocated for survivors and for research at the state and national levels. Now, Dian is ready to champion legislation to strengthen public schools, lower the cost of living, and support small businesses and working families.

Dian is stepping up, with the DLCC’s support, to capitalize on this year’s opportunity to flip District 16 blue and help Democrats build a majority in the New Hampshire Senate.

2026 is a historic opportunity to flip both chambers of the New Hampshire legislature.

Current GOP House and Senate majorities in New Hampshire have used their power to green-light Trump’s disastrous agenda at the state level, pushing attacks on civil liberties and voting rights, gutting public school funding, and turning a blind eye to the affordability crisis squeezing working families from all sides.

Over the last several cycles, the DLCC has helped New Hampshire Democrats win key races and keep majorities within striking distance in 2026. As we approach Election Day, Democrats need a 5-seat gain to win the majority in the state Senate, and a roughly 23-seat gain to win a majority in the 400-seat state House. 

Flipping both chambers would create a powerful firewall protecting Granite Staters from the most harmful aspects of MAGA extremism. With every seat in both legislative chambers on the ballot this year, now is the time to rally behind the most competitive Democratic candidates and send a blue wave across New Hampshire.