Nevertheless, a series of firsts across the country signaled voters accepted unconventional candidates in an unconventional time in American history, electing two Native Americans, two Muslim women, two Latina women in Texas and the nation's first openly gay governor.
Florida Democratic gubernatorial candidate Andrew Gillum walks with his wife, R. Jai Gillum, and children Caroline and Jackson as he votes, November 6, 2018, in Tallahassee, Fla.
"If the Democrats really believe that this President is controlled by Russian Federation, then why do they say nothing about it?" The party needs to gain a net of 23 seats to take control of the House for the first time since 2010.
She said: "When Democrats win and we will win tonight, we will have a Congress that is open, transparent and accountable to American people".
Traditionally, the president's party does badly in the midterms, and Trump also has low poll ratings compared to other presidents at this point in their administration. A CBS News exit poll offers some clues. Heidi Heitkamp of North Dakota and Missouri's Claire McCaskill appeared to be facing defeat.
That would give the Senate the role of blocking House-passed Democratic initiatives on everything from health care to the potential repeal of tax cuts on the wealthy that the GOP enacted previous year. Knocking off Donnelly in IN makes the math hard for Democrats, with competitive Senate races still too close to call in Florida and Texas. The Florida Senate race between Democrat Bill Nelson and Republican Rick Scott remained deadlocked.
Around a dozen races from New Jersey to Nevada were seen as coin flips or at least competitive, prompting each side to spend hundreds of millions of dollars. From 6 p.m.to 7 p.m., insiders will have their eyes on Lexington, where Republican incumbent Andy Barr is up against Democratic challenger Amy McGrath, a retired Marine.
But they will not take back the Senate, which would mean that Republicans will maintain power over nominations to powerful positions such as cabinet posts, ambassadorships and justiceships. Democrats were buoyed by a wave of Republican retirements and an overwhelming fundraising advantage. He's been accused of voter suppression but at the weekend he launched an investigation into claims that Democrats were being investigated for trying to hack the state's voter registration system.
A Reuters analysis of the past half century showed stocks fared better in the two calendar years after congressional elections when Republicans control Congress and the presidency than when Democrats controlled the two branches, and at least as well as during times of gridlock.
State Senator Andrea Stewart-Cousins celebrated the sweep on Tuesday night.
While the economy continues to thrive, Trump has spent much of the campaign's final days railing against a caravan of Latin American immigrants seeking asylum at the U.S. border. "Who we are is on the ballot", he said.
"I'm not on the ballot, but in a certain way, I'm on the ballot", Trump said in October.
Trump also touted a booming USA economy that continues to pump out jobs and raise average wages But his economic arguments were overshadowed by those appealing to nativist sentiments, such as a promise to end the right of anyone born in the States to citizenship. Kim Davis, the clerk who famously refused to sign marriage licenses for gay couples, lost her re-election bid for the Rown County clerkship in Kentucky. Lines snaked around polling places from California to Florida.
On the other side of the country, in Atlanta, Georgia, voters waited in line for almost two hours to cast ballots, according to local media reports. Some of the lines were due to election glitches.
Perhaps the most striking finding of the poll is that 43 percent of American mid-term voters named healthcare as the top issue for them.
Once in control of the three branches of government, Democrats are expected to take on issues like access to abortion, health care and affordable housing. Trump was badly underwater among women voters - who favor Democrats 62% to 35% - a gender gap, that if borne out by real votes, could prove devastating to Republican hopes. In the last such congressional elections in 2014, there were 27.5 million early votes. The federal government warned of active campaigns by Russian Federation and other nations to disrupt the elections.
What's happening in House races?
A voter fills out the ballot at a polling station in Madison, Wisconsin.