Trump - a 72-year-old former reality TV star and businessman-turned-politician - hardened his rhetoric down the stretch on issues that appealed to his conservative core supporters, issuing warnings about a caravan of Latin American migrants headed to the border with Mexico and condemnations of liberal American "mobs".
He was due to be joined by Republican megadonor Sheldon Adelson, Blackstone CEO Stephen Schwarzman and the President's ex-campaign aides, David Bossie and Corey Lewandowski, a source familiar with the guest list said.
Without mentioning President Donald Trump by name, Shalala had a clear message for the White House in her victory speech.
A spokesperson for Ms Pelosi said Mr Trump had called her to congratulate her party on winning a House majority, and acknowledged Ms Pelosi's call for bipartisanship.
The early exit polls, according to CNN, indicated that 4 in 10 voters say health care is the most important problem facing the country, whereas 2 in 10 say the economy and immigration are their top issues. More women than ever were running, along with military veterans and minorities, many of them motivated by Trump's rise.
In the House, 237 women were on the ballot as major-party candidates.
Obama, still hoarse from days of campaigning, told volunteers that issues like health care and opportunities for working families are "on the ballot", along with the nation's character.
Voter turnout could be the highest for a midterm election in 50 years, experts predicted.
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.
An 86% chance is not a sure thing, but it's a strong indicator of the most likely outcome. Several dozen midterm races where candidates from the two sides were barely separated will decide the day.
Rick Grimes Lives! Andrew Lincoln Led Walking Dead Movies in the works
It feels good to know Lincoln ended his time on the show giggling, given how heartbreaking The Walking Dead can be. I mean, you know, in a world where it's impossible to do that nearly all the time, just put it down.
The Democrats benefited from extraordinary voter enthusiasm, robust fundraising and unusually fresh candidates.
Pennsylvania looked particularly daunting for Republicans after court-imposed redistricting and a rash of retirements put several seats in play. At least three other red districts flipped to blue.
Outside Richmond, Virginia, one-time tea party favorite Rep. Dave Brat lost to Democrat Abigail Spanberger, a former Central Intelligence Agency operative motivated to run for office after the GOP vote to gut the Affordable Care Act.
Democrats have so far managed to win a net of 13 seats, many of which run though suburban areas. Finally, Democrats have performed well in off-year elections ("special elections").
Nine Republican incumbents are defending House seats in districts where Trump's margin of victory in 2016 was less than 5 percentage points.
By the NCSL's record, Republican dominance of state legislatures is at a historic high. Rep. Marsha Blackburn was able to hold Tennessee's seat for Republicans, as current Sen. Democrats needed to gain 23 seats to reclaim control.
Ilhan Omar of Minnesota and Rashida Tlaib of MI, who are both Democrats, will be the first Muslim women to serve in Congress.
The GOP campaign committee distanced itself from eight-term Rep. Steve King of Iowa after racial remarks, and his seat was unexpectedly contested in the final week of the campaign.
The verdicts in the House and Senate were based on incomplete results as vote counting continued across the country and some states were still voting in a congressional election cast as an unofficial referendum on Trump.
One Washington Post writer pointed out that Democrats in the House would "give Trump a boogeyman" and he would have "a ready-made foil for his 2020 re-election campaign".