The Democrats appeared close to taking back the House on Tuesday in a victory that could slap a check on President Donald Trump's agenda over the next two years and lead to a multitude of investigations into his business dealings and his administration.
A rainbow forms over the US Capitol as evening sets on midterm Election Day in Washington, US Nov. 6, 2018.
President Clinton's first midterm was met with a loss of 54 House seats and nine Senate seats.
Democrats are favored by election forecasters to pick up the minimum of 23 House seats they need for a majority.
But they lost their majority in the House, a setback for Trump after a campaign that became a referendum on his leadership.
Democrats were gaining ground in the battle for House control Tuesday night, while setbacks in Indiana, Tennessee and Texas squeezed their already narrow path to a Senate majority.
Lavrov also reiterated Moscow's position that it is not meddling in USA elections.
A voting sign is seen next to debris left over from Hurricane Michael in Marianna, Florida.More news: Here are the candidates who made history in the 2018 midterms
A Democrat-controlled House was expected to pursue anti-corruption and voter-rights legislation, and hold multiple investigations on controversial aspects of the Trump administration, not least being allegations of collusion between his 2016 campaign and Russian Federation. "So I understand that you can have both sides", Gonzalez said.
"Tremendous success tonight. Thank you to all!" Democratic incumbents prevailed in Ohio, Pennsylvania, Michigan and Wisconsin, which Trump carried narrowly.
Wrapping up the campaign in recent days, Trump repeatedly raised fears about immigrants, issuing harsh warnings about a caravan of Central American migrants that is moving slowly through Mexico toward the US border.
Most Democratic candidates in tight races stayed away from harsh criticism of Trump during the campaign's final stretch, focusing instead on bread-and-butter issues like maintaining insurance protections for people with pre-existing medical conditions and safeguarding the Social Security retirement and Medicare healthcare programs for senior citizens. While Republicans confront serious headwinds in holding the House, the uniqueness of the contest in each of 435 House districts makes for a wide range in the potential number of seats Democrats may gain. Following President Obama's first term, 63 House seats and six Senate seats were lost by the Democrats.
Another election observer, the Center For Politics at the University of Virginia, is predicting Democrats will gain at least 30 seats on Tuesday.
As one of the most volatile midterm elections in US history wound down, the Democrats drew ever closer to the 218 seats needed for a majority, with dozens of races still undecided. Democrats who picked up Republican-held seats included Donna Shalala, a former Cabinet secretary under President Bill Clinton, in Florida.
Meanwhile, Sen. Ted Cruz fended off a spirited challenge from Democratic Rep. Beto O'Rourke, and Republican Sen.
In Kansas, Democrat Sharice Davids beat a GOP incumbent to become the first Native American and gay woman elected to the House.More news: Second Summit with North Korea's Kim in Early 2019
U.S. stocks opened flat on Tuesday as investors awaited the election results. In suburban Chicago, Republican Representative Peter Roskam, a key architect of the 2017 tax overhaul, was defeated by Democrat Sean Casten. Democrats also captured governorships in MI and IL.
Voters between the ages of 18 and 34 backed Democrats by 62 percent to 34 percent, up from 2014 when 54 percent backed Democrats and 36 percent supported Republicans.
Midterm elections are typically hard for the party in power, but the GOP's hold on power was further weakened by an unusually large number of retirements as well as infighting between conservatives and centrists over their allegiance to Trump.
"In a certain way, I am on the ballot", Trump said in a conference call Monday with his supporters.
The Democratic victory, she said, "is about restoring the Constitution's checks and balances to the Trump administration", and a check on Senate Republicans.
Trump's polarizing impact on the country has driven unusually high interest in the election, the first major political test of his presidency and one that will provide Democrats with clues to the strategy they'll need to challenge him in 2020.
In an interview with ABC on Monday, the president said he wished he had taken "a much softer tone" throughout his presidency.
Mr Trump's opponents are upset over his proposals to reverse Obamacare, and build a wall between the USA and Mexico. Men, by contrast, were more evenly divided in their vote.More news: Mail bomb suspect to appear in NY court today
Sixty of those vulnerable districts are now under Republican control or were left vacant when a Republican lawmaker resigned. "I feel confident we will win", House Minority Leader Nancy Pelosi said on Tuesday, decked out in a bright blue dress at her party's headquarters in Washington, D.C.