But what if that doesn't happen?
The Daily Beast has examined that "unthinkable" scenario in some depth. A Democratic failure would be cataclysmic for the Resist movement.
"After all this work, all these volunteers, it would be absolutely shattering", Democratic strategist Paul Begala told the website.
President makes two trips in four days in support of Republican Senate candidate Josh Hawley in his race against Democrat incumbent Sen. A CNN poll gave Democrats the largest margin, a 13-point advantage; an NBC/Wall Street Journal poll had the Democratic lead at 7 points. "I don't think Trump has done that at all".
And there is no guarantee the polls are correct.
"It all depends on turnout", he said.
Russian foreign minister Sergei Lavrov added that accusations of Russian interference in the midterm elections were "empty statements".
With massive turnout from early voters, the Texas senate election is going to be a big one - and if it goes Democrats' way, a nightmare for Republicans.
Laurel Smith, 58, who has a son with a rare genetic disorder, voted for MacArthur in 2014 and 2016 before he authored a last-minute amendment that resuscitated the repeal effort in the House in May 2017.
In New York City, 29-year-old Alexandria Ocasio-Cortez is expected to become the youngest woman elected to congress while Ayanna Pressley is the favourite to become Massachusetts' first black woman elected to congress.
"So we just want to let them know that there will be prosecutions at the highest level". "But if there's any issue that hits people directly and you can get away with not being about Trump, it's healthcare".
Queen Elizabeth invites Meghan Markle's mom to United Kingdom for Christmas
Doria Ragland got to know the royals, including Prince Charles and Camilla, at Meghan and Harry's wedding in May. While Kate's familu have joined the royal for mass on Christmas morning, they have stayed at Anmer Hall.
What if their nightmare comes true again? "We have a tremendous opportunity to make things even better". In the wake of Clinton's defeat to Trump, some wondered whether he could have won in her place. "It's an awakening of the Democratic Party".
A debate about whether Trump's biting rhetoric encouraged extremists erupted in the campaign's final weeks after pipe bombs were mailed to his top political rivals allegedly by a Trump supporter who was arrested and charged, and 11 people were fatally shot at a Pittsburgh synagogue.
Sean Trende of RealClearPolitics also had some possible good news for the GOP, noting, "There really are believable scenarios that don't require Republicans to win districts that they have written off. Republicans have to catch some breaks, but they don't have to catch breaks in ways that shock and surprise us".
Midterms have traditionally not been kind to the party in power. "America faces a critical choice: whether to build on the extraordinary prosperity that Republican policies have delivered for our nation - or whether to allow Democrats to take control and take a giant wrecking ball to your economy and your future".
Democrats are acutely aware of the risks they are facing this time around.
Democrats feel increasingly optimistic about their chances of taking back control of the House.
"You want to see Georgia prosperity end?" A solid lead was had and lost by the Democrats, which is obvious.
House of Representatives members serve two-year terms representing the people of a single constituency, while each state has two senators.
"I'm not going to get into the specifics of the investigation", Kemp told reporters.
"He is kind of a towering figure in the party".
The political realignment, if there is one, could re-shape USA politics for a generation.
Some of the contenders for Obama's mantle, such as Massachusetts Senator Elizabeth Warren and Sanders, are busy quietly defending their own seats at the moment. Unlike many other news organizations, we have not put up a paywall.