1 person in my family (me) voted in the primary (not for Handel).  3 (the same who voted for Trump) will/have voted for Handel in the run-off. I'm a partisan and I expect others like me will get their less partisan friends out to do the same.  Handel only needs the same support the top 4 GOP vote getters got in the primary plus a little more to pad the cushion.  

I won't be surprised if Ossoff wins, because she is a genuinely garbage candidate, who leaves you with the sense of "Does she know what she stands for?" but he's not without his many flaws.