Seth Moulton, Massachusetts Congressman, Is Running for President

Representative Seth Moulton of Massachusetts, a third-term congressman who has pushed for a “new generation of leadership” in Washington, declared his candidacy for president on Monday, becoming the 19th candidate to enter the Democratic primary field.

“We need to restore our moral authority in everything we do. Whether it’s appointing a Cabinet member, negotiating a treaty or signing an executive order, I will always uphold America’s values,” he said in a video announcing his campaign. “I’m running because we have to beat Donald Trump. And I want us to beat Donald Trump because I love this country.”

Mr. Moulton, 40, garnered attention in November when he helped lead a group of rebellious Democrats who had sought to deny Speaker Nancy Pelosi the gavel in the new Congress. The effort was unsuccessful, and Mr. Moulton ultimately voted for Ms. Pelosi. His online biography paints him as something of a disrupter, noting that he was “the only Democrat to unseat an incumbent in a primary” in the House of Representatives when he was first elected in 2014.

Mr. Moulton, a Harvard-educated Marine veteran, has also focused on recruiting veterans to run for Congress as Democrats, including a handful who campaigned and won in 2018 promising not to back Ms. Pelosi.

[Learn where Seth Moulton stands on foreign policy, the environment and more.]

During his time in Congress, Mr. Moulton, who represents a district in northeastern Massachusetts, has passed bills aimed at improving the way health care is delivered to veterans and making government travel more efficient. Given his background as a veteran, his campaign is likely to concentrate on national security and foreign affairs — areas that have received relatively scant attention from other candidates, who have focused more heavily on domestic issues such as health care and the economy. By focusing on his military service and his relative youth, Mr. Moulton may seek to draw a contrast to President Trump, who is 72 and received several draft deferments during Vietnam.

Mr. Moulton also has released a plan that outlines a series of electoral reforms, including automatic voter registration and making Election Day a national holiday. And he has argued for abolishing the filibuster and the Electoral College.

But with so many candidates in the race, Mr. Moulton faces a steep uphill climb to the nomination. He is one of four sitting members of the House of Representatives who is running for president; all are seeking to become the first person to be elected president from a seat in the House since James Garfield in 1880.

[Who’s in? Who’s out? Keep up with the 2020 field with our candidate tracker.]

One of the other House members running, Representative Tim Ryan of Ohio, is also known for his criticism of Ms. Pelosi, and for having joined forces with Mr. Moulton in the push to replace her as speaker.