I just ran the numbers.

The Top 2 vote getters win.

Assume 700K Voters.  40% Vote in the Special Election.  60% are GOP.  40% are Dems.  Dems look like 80% will go to Ossof – 90K.  If the second place Dem gets 80% then that Dem gets 34K votes.

If the GOP top vote getter gets only 18% that equals 30K votes

So, based on these numbers even if Ossof only gets 30%, or 33K votes, the Dems will win the top two slots.

Can you check my numbers to see if this makes sense.

Total Residents 700,000
Likely to Vote 40% 280000
GOP 60% 168000
DEM 40% 112000
GOP
Handel 18% 30240
Gray 14% 23520
Hill 8% 13440
Kremer 3% 5040
Moody 2% 3360
Levell 0% 756
Others 1% 1680
46%
Dem
Ossof 80% 89600
Slotin 20% 33600