Seth Moulton

Seth Wilbur Moulton (born October 24, 1978) is an American politician and Marine Corps combat veteran who has been the U.S. representative for Massachusetts's 6th congressional district since 2015. A member of the Democratic Party, his district includes many of Boston's northern suburbs, such as Andover, Marblehead, Peabody, and his hometown of Salem. After graduating from Harvard College in 2001 with a bachelor of science in physics, Moulton joined the United States Marine Corps. He served four tours in Iraq and then earned his master's degrees in business and public administration in a dual program at Harvard. He entered politics in 2014, when he was elected to represent Massachusetts's 6th congressional district. In November 2018, Moulton spearheaded an effort to oust Nancy Pelosi as House Democratic leader. Despite Moulton's efforts, Pelosi easily won the Democratic nomination for Speaker of the House on November 28, 2018, by a 203-to-32 vote of the Democratic caucus. On April 22, 2019, Moulton announced he would pursue the Democratic nomination for president in the 2020 election. Moulton campaigned across Iowa, New Hampshire, and South Carolina during early 2019. Moulton's presidential campaign failed to garner support and he did not qualify for the primary debates. Moulton withdrew from the presidential race on August 23, 2019. On October 15, 2025, Moulton announced his candidacy in the 2026 U.S. Senate election in Massachusetts, challenging incumbent Ed Markey in the Democratic primary. Moulton lost to Markey on September 1, 2026.