That’s without joking exactly what they do. Now if that one millennial voter is a different one in each cohort of participants you get huge swings in the survey that are not very predictive of election outcomes, and that error is poorly represented in the margin of error.
Also what’s the political calculus for Kemp? Maga hates him, because he has issues with Trump, on account of not stealing the election. Here he gets to signal his bipartisanship by saying he worked with Biden to raise the wage of teachers. Shouldn’t that be the savvier move in a purple state?