Democrat Jon Ossoff fell just short of the 50 percent mark in Tuesday’s special election for a House seat in Georgia’s 6th congressional district, an affluent and reliably conservative area in Atlanta’s northern suburbs that has sent Republicans to Congress since electing Newt Gingrich in 1978. Ossoff won roughly 48 percent of the vote in an 18-candidate field, and he will face Republican Karen Handel in a June 20 runoff election. Handel, a former Georgia secretary of state, was running a distant second place with 19.8 percent of the vote. Ossoff, a 30-year-old former congressional staffer, told supporters Tuesday night that even if he has to face Handel in a runoff, “there is no doubt that this is already a victory for the ages.” Handel, 55, dismissed Ossoff as a “young man” and said she vowed to “kick a little Ossoff” in June. She did not mention President Trump. The 11 Republicans in the race got a combined 50.9 percent of the vote, suggesting a competitive June 20 runoff election.