An inside look at Georgia's upcoming special election - maybe the priciest US House race ever

Jon Ossoff has raised over $23.6 million ahead of Georgia's special election.

Ossoff won 48.1 percent of the vote during a primary in April, but failed to win the simple majority needed to take the seat outright. He now faces Republican Karen Handel, Georgia’s former secretary of state. By comparison, Handel has raised over $4.2 million, an impressive figure on its own. The amount of money going into the race is unprecedented, especially in a special election. In the year leading up to the 2016 election for the seat, Price raised $2,300,000 before easily defeating the Democratic candidate with 61.8 percent of the vote.

Before the special primary in April, Ossoff had already raised $8 million and Handel $467,000. Comparatively, ahead of the South Carolina fifth congressional district special election, which will also take place Tuesday, Democratic challenger Archie Parnell has raised $559,000.

Given the national attention, both Ossoff and Handel have raised money from around the country -- not just at home. While the most cash was raised locally in Georgia, donors from California and New York sent considerable cash in too. According to FEC data, Ossoff has raised $578,000 in Georgia, $536,356.61 from sources in California, and $423,000 from New York.

Handel has received $340,000 from within Georgia, $16,200.00 from California, and $8,400.00 from New York donors.

According to the strategist, his fellow progressives were frustrated that the party did not spend more money on other special election races earlier this year in Kansas and Montana, and do not think a potential Ossoff win should be treated as an indicator of the only type of Democratic candidate that can win.

Despite the cash and volunteer support coming in, the Democratic Congressional Campaign Committee (DCCC) insists Ossoff faces an uphill battle.

“Even with Ossoff’s considerable war chest and an unequaled grassroots army, Republicans hold numerous structural advantages, which is why the DCCC has invested heavily in expanding the electorate and persuading swing Georgians to vote their Ossoff,” the national political organization said in a statement in May.

The DCCC has contributed over $6 million -- including almost $5 million on Atlanta TV, radio, and digital advertising -- against Handel. A significant portion of this funding has gone specifically towards mobilizing black and young voters.

Online efforts, like a fundraiser by the website Daily Kos through the Democratic nonprofit ActBlue, have raised nearly $2 million from over 100,000 individual donations for the Ossoff campaign. The ActBlue donation page for Ossoff states “flipping this seat from red to blue would send shockwaves through Congress — and replacing Trump's anti-Obamacare point man with a Democrat would be an amazing little cherry on top.”

Erin Hill, Executive Director of ActBlue, told ABC News that fundraising levels for Ossoff are in the top five of all the candidates and entities that have ever used ActBlue. Hill sees the success of Ossoff’s fundraising as a “harbinger of things to come” and notes that ActBlue is “seeing donations like never before.” The organization has surpassed $200 million raised in the first five months of 2017, the same amount raised in all of 2015.

“People really want to have their voices heard,” said Hill.

Swing Left, an organization focusing on assisting democratic candidates in swing districts supported by Hillary Clinton’s Onward Together nonprofit group, has also made major fundraising efforts, reminding voters that Ossoff fell short of an April victory by only 3,700 votes.

Tuesday it will be made clear if the additional millions of dollars contributed since the primary have paid off, or if the seat remains red despite nation-wide Democratic efforts.