BOSTON — Massachusetts Rep. Ayanna Pressley said Wednesday that voters handed Democrats a mandate for sweeping change in Tuesday's midterm elections and warned her party against scaling back its ambitions once it takes control of Congress in January.

"The people gave us a mandate for bold, transformative policy. And our Democratic majority must meet the moment," Pressley wrote on X at 12:46 p.m. Wednesday. "Now is not the time for incrementalism or moderating our aspirations."

She added that Democrats "have to use our power and be ready on day one to do the work of repair and reconstruction."

Pressley, a Boston Democrat, was reelected Tuesday without opposition in the 7th Congressional District, which covers much of Boston as well as Cambridge, Somerville and several other communities. She became the first Black woman elected to Congress from Massachusetts in 2018 and is an original member of the group of progressive House members known as "the Squad."

A sweeping night for Democrats

Democrats won control of both chambers of Congress on Tuesday. In the House, the party reached 218 confirmed seats, enough for a majority, and is projected to start the new term with its largest majority in nearly two decades, NBC News reported. In the Senate, NBC News projected Democrats flipped seven seats: Iowa, Kansas, Ohio, Maine, North Carolina, South Carolina and Texas.

House Minority Leader Hakeem Jeffries of New York, expected to become speaker when the new Congress convenes, said Democrats will "end this national nightmare," Fox News reported. House Speaker Mike Johnson said Wednesday he will not run for minority leader, CNBC reported, citing Punchbowl News.

Pressley's call came as other Democrats signaled aggressive plans for their new majorities. Massachusetts Sen. Ed Markey, reelected Tuesday, posted late on election night that Big Tech executives would "need to plant new forests for all of the subpoenas we'll be printing."

The new Congress convenes in January.