The political arm for Everytown for Gun Safety, a gun-control group, has dropped $100,000 in the past week to boost Georgia Democrat Lucy McBath ahead of Tuesday's Georgia congressional runoffs. 

McBath, who is running for the Democratic Party's nod in the Atlanta-area 6th Congressional District, lost her son in 2012 when a man shot him for playing music too loudly at a gas station. She has become a prominent gun control advocate in the years since her son's death, working with Everytown, and is now running for the right to take on GOP Rep. Karen Handel in November. 

Everytown is the most active outside group in the race by far, and it has spent more than $1 million to boost McBath this election cycle. In the race's final week, the group dropped $100,000 on radio ads, internet ads, a texting program and phone calls, according to recemt filings with the Federal Election Commission. 

McBath squares off against fellow Democrat Kevin Abel in Tuesday's runoff, a vote made necessary when no candidate hit 50 percent in the May 22 primary. While the district was home to the most expensive House special election in American history last year, the 2018 election has seen far less fanfare and Handel is still seen as the favorite.