Heralded by Trump as a "tremendous success", the Republican Senate victories will all but end any immediate talk of impeachment, even as the Democratic-led House will enjoy investigative powers to put new checks on his roller-coaster presidency.
Blue-collar voters and rural America embraced his aggressive talk and stances.
However, the ruling Republican Party retained its majority in the 100-member Senate where it now has a razor thin majority of 51-49 seats.
In September alone, Rep. Elijah E. Cummings, the ranking Democrat on the House Oversight Committee, called for the panel to issue subpoenas to the Trump administration on seven different investigations, ranging from immigration to Obamacare.
The results allowed both parties to claim partial victory, but highlighted an extraordinary realignment of US voters by race, sex and education. Democrats relied more upon women, people of color, young people and college graduates.
Women won at least 85 seats in the House, a record. The House was also getting its first two Muslim women, MA elected its first black congresswoman, and Tennessee got its first female senator.
"Divisiveness is really tearing the country apart", Koutsogiogasi, a Democrat, said as he voted with his wife.
Voters between the ages of 18 and 34 backed Democrats by 62% to 34%, up from 2014 when 54% backed Democrats and 36% supported Republicans.More news: Melbourne Cup 2018: Cliffsofmoher put down after fracturing shoulder during race
The current Democratic ranking member on the House Ways and Means Committee is Rep. Richard Neal (D-MA), and Melber said that he's serious about this request. Tim Kaine, his party's defeated 2016 vice presidential candidate, won re-election. Republicans flipped several Senate seats on Tuesday, with wins by Josh Hawley over Sen.
With a House majority, Democrats will have the power to investigate Trump's tax returns and possible conflicts of interest, and challenge his overtures to Saudi Arabia, Russia and North Korea.
Democratic energy, fueled by opposition to Trump in these largely suburban districts took down incumbents often touted as among the most formidable in the GOP conference, including Colorado Rep.
In Kansas, Democrat Sharice Davids beat a GOP incumbent to become the first gay Native American woman elected to the House. But in Kentucky, one of the top Democratic recruits, retired Marine fighter pilot Amy McGrath, lost her bid to oust to three-term Rep. Andy Barr.
In the lead-up to the race, most analysts and polls expected Republicans to keep the Senate and lose the House.
The Democrats picked up at least a dozen Republican-held House seats across nearly all regions of the country as returns were still coming in Tuesday but fell short in some closely watched races as they fought to wrest control of the chamber from the GOP.
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Ted Cruz, who was re-elected as a Texas governor, said: "Thank you, Texas!"
Trump and his allies have been working to whip up conservative voters into a furor ahead of the midterms.
"Most American voters have strong views about Trump, whether they support or oppose him", says Tama.
"I am very, very, very concerned about the Republican Party and the direction it has taken", said Pfradt, who said she used to be a Republican but now identifies as an independent". She persuaded candidates to shut out the noise - "don't take the bait" - and stick with their legislative agenda of lowering health care costs, rebuilding the nation's infrastructure and delivering government reforms.
Kobach had built a national profile as an advocate of tough immigration policies and strict voter photo ID laws. Voters scored Trump positively on the economy and for standing up "for what he believes in". Minnesota and Montana are close, with a less than five percent gap between approval and disapproval.
Democrats could derail Trump's legislative agenda for the next two years after winning control of the House.
Trump had worked hard to buck up endangered Republicans, criss-crossing the country for campaign rallies and firing out endless endorsements for candidates via Twitter.
Americans voted enthusiastically, with long lines quickly forming at polling stations from NY to California and from Missouri to Georgia.More news: Bryce Harper rejected contract offer from Nationals