Last nail in the coffin reference there?
I see 2 possibilities here
1: Q doesn't return until midterms are said and done. The next phase of the plan requires winning them and can't proceed any further before that. He did say several months ago they are safe but he never specified how exactly. I assume he meant they are safe from voter fraud but all that is useless if patriots don't actually go and vote.
2: We have missed something and Q is waiting for us to figure it out. I'm pretty sure he has done this atleast once before.
I don't think he will leave without making it
very clear to us. There were similar speculations back in june or july too when he went silent for a long time.