As a result, Bloomberg's team poured money into otherwise overlooked suburban districts in states like Georgia, Washington state and Oklahoma because data revealed voters there were better-educated.
While he is not on the ballot, Trump himself has acknowledged that the 2018 midterms, above all, represent a referendum on his presidency.
His recent decision to send 5,000 troops to the Mexican border as a caravan of Central American migrants approaches has divided opinion.
Republicans are favoured to retain their slight majority in the US Senate, now at two seats, which would let them retain the power to approve US Supreme Court and other judicial nominations on straight party-line votes.
"The character of our country's on the ballot", he said.
"The major issues for voters are healthcare, immigration, and trade policy".
Trump is telling the caravans to turn back and insisting they will not be allowed in.
For Democrats, the midterm elections have been a beacon in the dark, a chance to re-emerge from the political wilderness and repudiate a President they view as a unsafe force. On Sunday, hours before Trump was supposed to speak for his party's gubernatorial candidate in Georgia, Brian Kemp, his supporters lined up for almost half a mile while Lynyrd Skynyrd's "Free Bird" played and vendors sold Trump gear. 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 other side. In Georgia he introduced former University of Georgia football Coach Vince Dooley to address the crowd of supporters. Analysts were all over the board in 2016, with some giving Clinton a 99 percent (!) chance of winning, but FiveThirtyEight's final forecast placed Trump's chances of victory on the eve of the election at better than one in four.
Legal decisions and a racist robocall in Georgia governor's race
Oprah Winfrey is literally going door-to-door in Georgia to help canvas for Democratic Gubernatorial candidate Stacey Abrams . On Saturday, it was reported that racist robocalls bankrolled by white supremacists were targeting Abrams and Winfrey.
Days before the country is set to deliver what many are viewing as a referendum on President Donald Trump and his nationalist movement in Tuesday's midterm elections, Steve Bannon admits he is anxious.
Although the controversial firebrand appears at least prepared for possible losses on Tuesday, he's not ready to throw down his tools and say it's all over - he nearly seems to be salivating at the idea of once again being the underdog.
Most polls show Democrats recapturing the House of Representatives from Republicans by flipping at least 23 seats, although latest surveys indicate a certain loss of momentum as President Trump has rallied his white base with fear- and scare-mongering rhetoric that one observer likened to "apocalyptic attacks reach (ing) a new level of falsity".
In prepared remarks for a speech Sunday at an interfaith prayer lunch in Chattanooga, Bredesen said Trump will "have plenty of derogatory things to say about me".
"I snookered them", Arthur Jones told Politico, referring to the state Republicans. While discussing a potential blue wave, he repeatedly reiterates cliché sports phrases like "you can't win them all" and "if we lose, we have to make it competitive". Gillum shot back that Trump is a liar, adding a folksy line attributed to his grandmother about wrestling with pigs. "If it's bad for Tennessee, I need to oppose him". The gains would be north of 40 or 45 seats and give Democrats a substantial House majority - comparable to the GOP's current 42-seat majority. "Trump has hijacked the election", one senior House Republican aide tells Politico.
Pennsylvania is one of the U.S. states where citizens are asked to vote for the Senate and the House of Representatives.
The Arizona Senate race between GOP candidate Martha McSally and Democrat Kyrsten Sinema remained at a virtual tie Monday, with many voters still undecided just 24 hours before they head to the polls.
"You'll start to see questions being asked about how taxpayer dollars are being wasted, how the government is being used as a piggy bank for the Trump family", Klain says.