Johnny Isakson retirement puts both of Georgia's U.S. Senate seats in play

Reported in Isakson to Resign From Senate, Citing Health Reasons.  (The New York Times, 8/28/2019)

Sources:  Wikipedia (2000, 2002, 2004), Ballotpedia (2010, 2016)

Isakson won a special election in 1999 to fill a vacancy caused by Newt Gingrich's resignation.  He easily exceeded the 50% threshold to avoid a runoff election.

Source:  Wikipedia