Rep. Ann Kuster (D-N.H.), chair of the influential New Democratic Coalition, will not seek reelection this year.

Kuster, who was first elected to Congress in 2012 and has served six terms on the Hill, said in a statement Wednesday that she will retire at the end of this Congress.

“This work has been many things — rewarding, frustrating, inspiring, and challenging. But, more than anything, it has been an honor,” Kuster said in the statement. “As your congresswoman, I have had the chance to meet directly with the people who make New Hampshire such an incredible place to live, work, and raise a family. From our small business owners to our first responders, farmers, teachers, veterans, health care providers, seniors, and local leaders, every conversation has been insightful and has guided my efforts in Washington.”

Kuster has led the centrist New Democratic Coalition in a thinly divided House, which gave the group more influence in the chamber. In her statement, she said she plans to chair the caucus until her term ends “to help pass comprehensive, bipartisan legislation to move our country forward.”