Georgia forecast ticks up to 85% for Ossoff after latest poll is absorbed

An InsiderAdvantage survey of 800 likely voters, fielded August 16-17, put Democratic incumbent Jon Ossoff at 50% and Republican Mike Collins at 43%. That seven-point gap is close to where our average already had the race, and the update it produced was small.

Our model now gives Ossoff an 85 in 100 chance of winning the seat, up from 83% in our previous run earlier the same day. The mean projected margin moved from D+6.6 to D+6.9. The uncertainty around it barely shifted: our 5th-to-95th percentile range runs from R+4.1 to D+17.9, against R+4.5 to D+17.7 before. In other words, the poll confirmed the existing picture rather than changing it, and outcomes on the Republican side of the ledger remain inside the model's range.

The national backdrop in our numbers is a generic-ballot average of D+6.7, drawn from 26 polls over the past 45 days — close to the margin our model expects in Georgia. That correspondence is part of why a single state poll in line with the average does little work here.

Senate control is a separate question from this seat. Our model gives Democrats a 46% chance of winning a Senate majority and Republicans 54%, with a mean of 50.1 Democratic seats. Democrats need 51 seats for control; Republicans need 50, because the vice president is a Republican and a 50-50 tie goes to them. A race our model rates at 85% for the Democrat is therefore closer to an assumption inside that calculation than a swing factor in it. Seventy-seven days remain before the November 3 election, and further polling in Georgia at this margin would keep the forecast roughly where it is.