The day of reckoning for American politics has almost arrived.
And the weeks leading up to Election Day were spotted with a string of violent incidents, including the deadly shooting rampage of a Pittsburgh synagogue and a series of pipe bombs being mailed to some of Trump's most prominent critics.
Stirring fear of foreigners and trumpeting American nationalism worked for Trump in his 2016 election victory against the Democrats' establishment candidate Hillary Clinton.
All 435 seats in the US House are up for re-election.
Voter turnout could be the highest for a midterm election in 50 years, experts predicted. "The press is very much considering it a referendum on me and us as a movement". And thanks to court-ordered redistricting in Pennsylvania, Democrats could net as many as four or five seats there. "It's all fragile", he said.
According to political pundits, the Democrats have a good chance of winning the House, while the Republicans are likely to retain the Senate.
But James Gerlock, a 27-year-old Republican, said he was happy with the economic growth the country has seen under Trump's presidency and "just (loves) the deregulation". The strangers faced each other from opposite edges of the great American divide, Democrat versus Republican, both convinced the election is among the most consequential in their lifetimes and that they must save the nation from the fearful consequences of other side. "Vote for the Democrat".
The political realignment, if it solidifies, could reshape United States politics for a generation.
President Trump and the Republican party owe their current dominance to this person. It was a deliberate strategy to expand the playing field to about 80 districts, stretching beyond college-educated voters in the suburbs into regions where the party has seen its fortunes fade.
"What it means to be Republican is being rewritten as we speak", Fleischer said.
"I think it will actually be an advantage to Trump is they pursue impeachment".
A nationwide poll released Sunday by NBC News and The Wall Street Journal details the depth of the demographic shifts. Democrats lead among women, younger voters, and black voters.
He pointed out Democrats have been enraged for years. A record number of women are also running for Senate, House, governorships and state legislative seats.
Vermont Sen. Bernie Sanders easily won his third term as he considers another bid for the Democratic presidential nomination.
"The survival of the country is going to depend on this election", he said as another man stopped for a moment to argue.
"The big picture is that midterm elections go against the president's party", noted John Fortier of the Bipartisan Policy Center in Washington. Trump declared in his typical style: "If she gets in, Georgia goes backwards".
Turnout is expected to be high. "We can even include some surprising Democratic wins".
"The drumbeat you hear across America is people voting", Democratic Leader Nancy Pelosi said as polls opened Tuesday. Even if they lose the House, if Republicans keep the Senate, they still get to control the approval process for new judges.
He said that shows how "warped" some voters are in their thought. Pinellas County Democrats joined forces to cross campaign with Congressman Charlie Crist, Attorney General candidate Sean Shaw, Florida House District 69 candidate Jennifer Webb and Senate District 24 candidate Lindsay Cross.
U.S. voters will decide whether Trump will keep his Republican majority in Congress or face a hostile Democratic majority after a bitter campaign for midterm elections described by both sides as a battle for America's soul.
But as he touched down in IN for the second leg of his final-day tour, even Trump conceded that the House may slip from his party's grasp.
But the first thing to remember is that while Trump's ascent to the presidency in 2016 was certainly a surprise, the polls were not, in fact, wildly inaccurate.
"I'm voting for Donald Trump", Stuart Kanter said.
Liberal activist Tom Steyer spent roughly US$120 million this midterm season.
This will likely be the earliest that the House will be called.
"In 2010 ... it was more about did you agree or disagree with Obamacare?" he recalled. "It's an awakening of the Democratic Party".