But it remains to be seen whether Democrats' rage will amount to the so-called "blue wave" they have anticipated for almost two years, or whether it's even enough to gain the 23 seats needed to eke out a Democratic majority in the House.
With a House majority, Democrats will have the power to investigate Trump's tax returns, possible business conflicts of interest and allegations involving his 2016 campaign's links to Russian Federation. They have also talked about pushing for improvements to the Obamacare system.
In House races, Democrats scored some early victories Tuesday in their quest to wrest control of the chamber, but Republicans were holding on in some key races where they faced strong challengers as initial returns were tallied. Left-leaning OH "populist" Democrat Sherrod Brown, thought initially to be vulnerable in a state that Trump carried by eight points, was quickly called the victor over Republican congressman and Trump buddy Jim Renacci soon after the polls closed. In the final stretch, Mr Trump hardened his rhetoric 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 what he called United States liberal "mobs".
Daniel McAdams, executive director at the Ron Paul Institute, agrees, noting that the Democrats "ran a frightful campaign" under the slogan "Trump is racist, vote for me".
In the broader fight for control in the Trump era, the political and practical stakes on Tuesday were sky high.
By election day, FiveThirtyEight gave Clinton a 71% chance of winning the election, leaving Trump with a 29% chance of winning.
Trump was holding his final three get-out-the-vote rallies in Fort Wayne, Indiana, and Cape Girardeau, Missouri, where he was being joined by special guest Rush Limbaugh.
So the first problem is that we assumed Clinton would win even though the data was telling us it was not a sure thing.
In fact, Trump's 51% approval in 2018 Florida exit polls is an improvement over the 49% of the vote he received in 2016 votes in Florida. This is well within the margin of error from the perspective of polling experts.
"This is our source of strength", O'Rourke said as he voted in El Paso.
The surprise, of course, was that Trump won the electoral college, and therefore the presidency.
Wisconsin is one of the worst states for the President. Only one-third said he played no role in their voting. This small error, along with the fact that some undecided voters unexpectedly voted for Trump, handed him the electoral college. In the last such congressional elections in 2014, there were 27.5 million early votes. News organisations have learned from this unexpected replication of a slight polling error across a number of districts and have now worked this possibility into their models.
However, only 1 in 5 voters selected the economy as the most important issue in the election this year, perhaps limiting the benefit of this issue for the ruling Republican Party. While pleading with voters to stop Democrats, he also hinted he will find ways to cooperate.
Trump called Pelosi, Senate Republican leader Mitch McConnell, Senate Democratic leader Chuck Schumer and several of the Republican winners. How women and independent voters cast their ballots was likely to determine the outcome. Around 57% said they approve of the job he's doing, fitting with the positive news for Republicans as CNN predicts Republican Marsha Blackburn will take a US Senate seat.