Donald Trump, his Republicans and their Democratic rivals steeled themselves for a final frenzied day of campaigning Monday on the eve of contentious USA midterm elections, when voters render their verdict on the president's first two years in office.
In Grand Rapids, Michigan, pro-Trump activist Ben Hirschmann, 23, sees Tuesday's elections as decisive for Trump's vision of America. The divisions exposed and expanded over the past few weeks seem certain to last well beyond Election Day.
LaVorgna adds that stocks have declined in just five post-midterm periods since 1922, with the last coming 1978; in the 12 months following midterm elections, stocks have dropped just four times since 1922.
So here are the big races that will tell us whether the Trump administration has a "blue wave" of Democrat colours on its hands, which will make life much harder for the president as he tries to push through his policies.
As Americans participated in early voting this weekend, that same anxiety was palpable among some voters.
"The only examples of a Republican President who controlled both the House and the Senate before the midterm elections, but lost control of the House, while maintaining control of the Senate, include only William Taft and Herbert Hoover", Nautilus Investment Research said in a note sent out to clients on Monday.
Results from this election will not have an effect on Donald Trumps role as president, but if the Democrats gain control of the House of Representatives then it could block some of his plans for his next two years in office.
Incumbent Republicans are in close races, including freshman Brian Fitzpatrick in suburban Philadelphia, three-term Scott Perry in southcentral Pennsylvania and three-term Keith Rothfus in suburban Pittsburgh.
In Chattanooga, Tennessee, to bolster the prospects of Republican Senate candidate Marsha Blackburn, Trump once again warned that caravans of illegal immigrants are on their way to flood across the southern border.
Bernie Sanders, the leftist populist who some feel would have had a better chance than Clinton to take on Trump in 2016, lashed out Monday at the president, calling him a "pathological liar".
In the House, they have around 40 more seats than the Democrats.
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Polls show Democrats are most concerned with health care and the economy, with Republicans focused on immigration.
Trump has repeatedly ratcheted up his warnings about Democrats wanting to encourage the immigration of violent criminals and rapists. And how will Democrats, if they fall short, sustain the energy from young people and women who have marched in protest of Trump, registered to vote and volunteered for the first time this election season. "We are the Democratic Party", he said.
Look at it this way: You don't need to read political news sites on Wednesday if the GOP gets wiped out.
"We're not letting these people invade our country", Trump declared. I would like to have a much softer tone.
He made no effort to distance himself from the harshness of his campaign, including an advertisement it produced that was deemed racist and was ultimately rejected by several networks, including his favorite, Fox News, as too offensive to air. "I'm here to say that hatred is not going to win".
He suggested he could change after the midterm.
He said "a lot of things can happen" if the two parties could find a way to work together. "We hate the media", she said, "because they're the Democratic arm". "And you know what you do?"
Mr Trump used the final day of the campaign to raise the possibility of voter fraud. "Anyone caught will be subject to the Maximum Criminal Penalties allowed by law". But if the GOP loses its majority it will need to to go on defense to protect Trump.
Democrat House leader Nancy Pelosi has expressed total confidence in recent days, telling interviewers: "We will win".
Trump's approach strikes me as more effective under the circumstances unless he's gone so far with it that it's actually costing the party votes among indies.
But where the Republicans should be singing the praises of an economy firing on all cylinders, Trump has been hewing closely to his 2016 playbook, relentlessly rallying his red-hatted supporters with a war footing against a South American migrant caravan slowly making its way through Mexico.