Both sides presented the results as a victory, although Democrats had greater bragging rights considering they ended the one-party Republican stranglehold in Washington by recapturing the House. As of this writing, not every race has been called and it is not yet clear how large the Democrats' majority will be, but it is already clear that the Speaker's gavel, and control of the House investigative committees, will go to them.
"That is possible", he told a news conference at the White House.
Control of the committees - where the three lawmakers are now the highest-ranking Democrats - will hand them the unilateral power to issue subpoenas if they wish, as well as to demand documents and testimony from White House officials and important figures in Trump's campaign team and businesses.With control of the legislative apparatus in the House, they will also have more money and staff for investigations.
The 2018 elections also exposed an extraordinary political realignment in an electorate defined by race, gender, and education that could shape US politics for years to come. That doesn't mean I think race and immigration weren't a major part of Trump's election pitch. The Republicans' three-seat expansion is a contrast to the 18 total seats lost by the Democrats in midterm elections in the Senate since 2010.
Many of them have made history- such as the first two Muslim American women elected to Congress, the first Native American women elected to Congress and the first woman senators for their states. Kristi Noem won the election to become South Dakota's first female governor. A margin of less than half a percentage point automatically triggers a recount.
The GOP also got major wins in toss-up governors races in states like Florida and OH, though Democrats did manage to pick up wins in a number of states like IL and MI. Progressives will nearly certainly clamour for Trump's impeachment - a push that Democratic leaders have indicated that they will resist, at least until Mueller releases his findings.More news: Bizarre: Virat Kohli asks fan to leave India over minor reason
Despite Trump's enthusiasm, it was a mixed night for the GOP.
Among those Trump took aim at was Rep. Mia Love, R-Utah, who, Trump said, asked him for help with what he called a "hostage" situation in Venezuela involving a Utah resident, but when it came to the election, "Mia Love gave me no love".
Trump sought to take credit for retaining the GOP's Senate majority, even as the party's foothold in the House was slipping.
"Tremendous success tonight. Thank you to all!" he tweeted.
Republicans increased their hold on the 100-member chamber, holding at least 51 seats in the Senate as both parties claimed legislative victories. President Trump wants as much as $5 billion to fund the southern border wall, but senior House Democratic advisers have told ABC News that Democrats, with a newly-reclaimed majority - will be loathe to provide one cent for that kind of funding.
Some hurt worse than others.More news: Democrats retake the House, setting up divided government
Mr Trump will now feel that his base has endorsed his actions over the past two years, our correspondent says.
Overall, 6 in 10 voters said the country was headed in the wrong direction, but roughly that same number described the national economy as excellent or good.
The president bet big on a xenophobic closing message, warning of an immigrant "invasion" that promised to spread violent crime and drugs across the nation.
Meanwhile, the close of the 2018 midterm season marked the unofficial opening of the next presidential contest.
Kavanaugh is seen as a conservative swing vote with a record and public comments that suggest deference to the power of the chief executive but legal experts caution it is hard to predict what might happen if legal challenges on emoluments or Trump's business records make it to the high court.
Democrats won the House, which will change hands for the third time in 12 volatile years, by performing strongly in suburban areas where Trump's flaming rhetoric is toxic.More news: Trump Calls US Midterm Elections 'Tremendous Success'
Sen. Troy Jackson, D-Allagash, the current Senate minority leader and a likely candidate for Senate president, echoed Libby's sentiments in a news release early Wednesday.