Amanda "Mandy" Merrill (D-Durham) has officially declared that she is running for the state Senate.

Merrill is running for the seat being abandoned by state Sen. Iris Estabrook (D-Durham).

"I believe my experience has prepared me for the challenges of being a state Senator," Merrill said in a statement. "As a House member I found great satisfaction in collaborating with lawmakers of all political stripes to pass legislation on education policy, energy and air quality, land conservation, solid waste, and ethics guidelines. I look forward to working with legislative colleagues and Governor John Lynch to address the economic, educational, and environmental issues that affect the lives of the people of District 21."

"Mandy has a reputation as a dedicated and thoughtful leader who works in a collaborative way to get results. The citizens of District 21 would be fortunate to have her represent them in the New Hampshire Senate," Estabrook said in a press release.

Senate District 21 includes Dover, Durham, Lee, Epping and Rollinsford.