Democrats have been recruiting aggressively in Republican-leaning seats - including in Michigan, Illinois and New Jersey - and party officials expect a wave of new challengers to announce their candidacies after the start of the next fundraising quarter in July. The last Republican to contest it - Tom Price, who has gone to Washington to be secretary of health - won in a landslide.
Missouri's Jason Kander had perhaps the most notable campaign ad of 2016 during his failed bid for the U.S. Senate.
"This is a harbinger of national politics", Perdue said Saturday at a Handel rally.
The president initially misspelled Handel's name, but deleted that tweet.
Karen Handel: Running as a staunch conservative in a district where that normally plays well, Handel is relying on her extensive record in both public and private life. While Ossoff has raised far more money for the race than his Republican rival, Handel has benefited from over $10 million in investments - almost all of which has gone towards attack ads - from GOP entities that have intervened since the first round of balloting in April.
He was in Atlanta's northern suburbs Monday knocking on doors and campaigning with Ossoff ahead of his Tuesday runoff matchup with Republican Karen Handel. Ossoff has said the address is close to Emory University, where his fiance attends medical school. "Trump's handling of the shooting might bring home enough traditional Republican voters uneasy with the president to carry Handel across the finish line", Robert Cahaly, a Republican pollster based in Georgia told Politico.
Handel maintained some distance from Trump in the primary but has fully embraced his support and agenda since, including a joint fundraiser. She touts her success with balancing in the budget as chairman of the Fulton County Board of Commissioners and becoming Georgia's first elected Republican Secretary of State.
She concluded: "I think it's going to go well for me and for Republicans".
Ossoff's droves of volunteers have drawn notice.
Trump wrote that Ossoff "can't even vote. because he doesn't even live there!" But Handel says that has not been a big factor in the race. During a recent trip to the district, The Washington Post encountered numbers of them in blue T-shirts going door to door - a glimpse into the energy on the Democratic side, especially among progressive millennial-age voters who see Trump as anathema to their views. After a reporter described it, Handel called it "disgusting".