there are red flags for the GOP in the senior vote, exactly like in Iowa.
http://www.politico.com/news/2024/10/31/trump-lagging-early-votes-seniors-pennsylvania-00186612
The drop off in the senior vote appears to be a rust belt phenomenon.
If it is nationwide, Trump is completely screwed. Don't know what caused it. But it is roughly coincident with the Drudge Report just savaging Trump over the last few weeks. Perhaps a catalyst, rather than the cause.