As for the candidates, Ossoff has easily raised more money than Handel.
More than 140,000 voters cast their ballots early - an astounding number for a special election, and one that almost matches presidential contests.
epa06021377 Republican Karen Handel, a candidate for Georgia Congressional District 6 participates in a Get Out The Vote Rally at a restaurant in Marietta, Georgia on June 10 2017.
Republicans have attacked the Democrat for his inexperience and youth. A Democrat has not won a House seat since the Carter administration, yet recent polls have shown Ossoff and Handel nearly deadlocked, less than two percentage points apart.
Turnout is on track to far exceed what is normal even for a November midterm and certainly beyond expectations for a special election.
The most expensive House race in USA history heads to voters Tuesday in suburban Atlanta.
Trafalgar Group, a Republican-leaning firm, surveyed over 1,100 likely 2017 special election voters June 17 and 18.
"Very, very encouraged by things".
Handel wants to repeal and replace ObamaCare and strengthen the country's borders, according to her campaign website.
Not that every vote in Congress doesn't matter, but the political upheavals of the next few years are unlikely to be changed in profound ways depending on whether Democrat Jon Ossoff or Republican Karen Handel prevails in what is sure to be a close election. Polls closed at 7 p.m.
The issue gained prominence last week when new details emerged about a security lapse at the center that manages Georgia's election technology.
An election official says voting has been moving smoothly at polling sites in Georgia's closely-watched House election.
But with Democrats looking next to the 2018 mid-term vote, in which every House seat is up for re-election, a win in Georgia would be a start toward capturing the 24 or more seats they will need to take back a majority.
The special election in the southern state is painted as a referendum on Trump, and the result may presage how his presidency - for better or worse - could influence the battle for control of Congress in 2018. "This is exactly what Americans are sick and exhausted of", Mr. Ossoff said on CNN. While Trump did a private fundraiser for her, she wants voters to know she's no rubber stamp. "I would feel my voice is heard". The 70-year-old retiree said she has knocked on potential voters' doors every week since March for Ossoff's campaign, motivated by her fears about Trump's election and his approach to health care, immigration and education.
She's also known for being a Susan G. Komen Foundation executive in 2012 when the organization sought to cut off its support of Planned Parenthood.
Tom Price, the former representative left the seat to serve as President Donald Trump's Secretary of Health and Human Services. It's a historically Republican seat that Donald Trump barely won last November, full of the educated suburban voters who populate key swing districts in Florida, California and across the South.
Handel has aligned herself gingerly with Trump. Both candidates have expanded their efforts greatly since the April primary, at which time totals only amounted to $8 million for Ossoff and $476,000 for Handel.
Born in Atlanta, Ossoff grew up in the Northlake area. He lives with his fiancee near the Emory University campus, where she is in medical school.