[Blueflag]

That’s true. Per our state constitution, the Guv will fill the seat. Then we have a regular general election with a known incumbent in place.

[upchuck]

There seems to be some confusion on this thread regarding the Governor filling Isakson's seat.

Per the AJC:

Gov. Brian Kemp, a Republican, will appoint a replacement for Isakson, who was elected to a third term by a wide margin in 2016. Though Isakson’s term doesn’t expire until 2022, the timing of his retirement means the seat will be on the ballot next year...

The vote will be held in November and, instead of featuring party primaries, will rely on the “jungle primary” system that’s likely to force a runoff. The winner of the 2020 race will fill the remaining two years of Isakson’s term and then face a 2022 contest for a full six-year term.