Nadler, once described by Trump as "one of the most egregious hacks in contemporary politics", is one of three prominent Democrats who have clashed with the president and who will take over key House committees when the new Congress convenes in January.
The Democrats could also more effectively block his legislative plans, notably his signature promise to build a wall along the border with Mexico.
Elijah Cummings, now the top Democrat on the House Oversight Committee, also has a wish list of probes, including Mr Trump's apparent interference in a plan to build a new headquarters for the Federal Bureau of Investigation; drug pricing under the Trump administration; and the mishandling of the deadly 2017 hurricane disaster in Puerto Rico.
"This isn't just the year of the woman, this is the year of every woman", said Cecile Richards, who served as the president of Planned Parenthood for more than a decade, noting the groundbreaking diversity among the women who have run for office this year.
The incoming class of lawmakers could have a stark impact on politics in the nation's capital, particularly within the Democratic Party, after a midterm election that was widely seen as a referendum on Trump's first term.
Russian President Vladimir Putin denies any involvement in Trump's election victory, and the Kremlin shrugged off concerns that a Democratic-controlled House would increase pressure on Russia.
Trump said Wednesday that "if they give her a hard time, perhaps we will add some Republican votes".
Almost 40 percent of voters cast their ballots to express opposition to the president, according to AP VoteCast, the national survey of the electorate, while one-in-four said they voted to express support for Trump.
He said Ms. Love often called him about helping free hostage Joshua Holt, a Utah resident who was released this year after two years in a Venezuelan prison. Democrat Beto O'Rourke lost his Texas senate bid to Ted Cruz.
The best news for the Republicans is that they protected several of their own vulnerable chambers, including the Arizona Senate, the Iowa House, the Michigan House, the Minnesota Senate and the Wisconsin Senate. After eight years in the US House, she was one of the rare high-profile Republican women seeking a promotion in a campaign year defined more by the enthusiasm of Democratic women and the proliferation of Democratic female candidates.
Interested in Midterm Elections?Republicans kept their Senate majority.
Donald Trump came to the East Room of the White House with olive branch in hand, but it sometimes seemed like his fingers were crossed behind his back. He said since Trump has been president, he 's hired two more employees for his six-person company. We rate statements based on what's known at the time they were made.
Trump, well aware of the Democratic intentions to investigate his personal taxes, which he has repeatedly declined to divulge, possible business connections with the government he oversees, and his administration's policies, assailed the looming Democratic-led House probes and the Mueller investigation on Twitter even as he boasted about Republican Senate candidates who ousted Democratic incumbents.
Trump won OH by nine points two years ago, and DeWine's victory continued the GOP's general dominance in statewide races. "They ignored the party bosses who said they should wait their turn".
President Donald Trump billed the midterms as an election about "Kavanaugh and the caravan", and it was - although not entirely as he planned.
Almost 40 per cent of voters cast their ballots to express opposition to the president, according to AP VoteCast, the national survey of the electorate, while one-in-four said they voted to express support for Trump. "Peter Roskam [of Illinois] didn't want the embrace".
He singled out Peter Roskam of Illinois, Erik Paulsen of Minnesota, John Faso of NY, and New Jersey Senate candidate Bob Hugin.
"Tremendous success tonight. Thank you to all!" he tweeted. "But what we stand for meant a lot to most people".