[Read more about Ms. Garcia.]

New York

Hakeem Jeffries

Image Credit... Erin Schaff/The New York Times

A former litigator and the No. 5 Democrat in the House, Representative Hakeem Jeffries is the highest-ranking member of the party leadership on the impeachment team. Many Democrats believe he is poised to become the first black speaker of the House. During the impeachment process, he has emerged as one of the Democrats’ top messaging lieutenants, deploying punchy declarations of resolve to hold Mr. Trump accountable and icy rebukes of Republicans who have scorned the effort as a partisan ploy. A former litigator at an elite corporate law firm in New York, Mr. Jeffries, 49, once defended CBS in a lawsuit over Janet Jackson’s wardrobe malfunction at the 2004 Super Bowl. He won his first political race in 2006, securing a seat in the New York State Assembly after two unsuccessful attempts. He was elected to Congress in 2012.

[Read more about Mr. Jeffries.]

California

Zoe Lofgren

Image Credit... Doug Mills/The New York Times

Representative Zoe Lofgren will enter the Senate trial having played a role in two previous impeachment inquiries. She served on the House Judiciary Committee in 1998, when it approved articles of impeachment against President Bill Clinton for lying about an affair with a White House intern. And as a young law student in 1974, she helped the committee draft Watergate charges against President Richard M. Nixon. Ms. Lofgren, 72, served as a member of the Santa Clara County Board of Supervisors and worked for her predecessor, Representative Don Edwards, before she was elected to the House in 1994. The daughter of a truck driver and a cafeteria cook, she holds degrees from Stanford University and Santa Clara University School of Law.

[Read more about Ms. Lofgren.]

New York

Jerrold Nadler

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As chairman of the House Judiciary Committee, Representative Jerrold Nadler helped draft and approve the two articles of impeachment against Mr. Trump in December. Campaigning for the committee chairmanship in 2017, Mr. Nadler pitched himself as a lifelong fighter for civil rights and civil liberties as well as an expert in constitutional law who was the “strongest member to lead a potential impeachment.” In the Senate, he is likely to work alongside the chairman of the House Intelligence Committee to make the case for why Mr. Trump should be removed from office. The son of a chicken farmer, Mr. Nadler, 72, was elected to Congress in 1992 after serving in the New York State Assembly.

[Read more about Mr. Nadler.]

California

Adam B. Schiff

Image Credit... Erin Schaff/The New York Times

Representative Adam B. Schiff was chosen to be the lead House manager of the impeachment trial after emerging as one of the most prominent Democrats spearheading the inquiry into Mr. Trump’s conduct. A former federal prosecutor who serves as chairman of the House Intelligence Committee, he began digging into the accusations that gave rise to the impeachment inquiry when he pushed for the disclosure to Congress of a whistle-blower complaint alleging a scheme by the president to enlist Ukraine to help him in the 2020 election. Mr. Schiff’s high-profile role has made him a favorite target of Republicans, including Mr. Trump, who calls him “Little Pencil Neck” and “Shifty Schiff.” Mr. Schiff, 59, graduated from Stanford University and Harvard Law School and was elected to Congress in 2000 after serving as a California state lawmaker.

[Read more about Mr. Schiff.]

Reporting was contributed by Catie Edmondson, Emily Cochrane, Sheryl Gay Stolberg, Michael D. Shear and Nicholas Fandos.