2025 Hall of Fame voting has technically already finished. For a BBWAA writer to have their vote counted in this year’s election, the vote had to be completed and returned by the final day of 2024. I’m not sure if that date is a “postmarked by” deadline, or if Cooperstown actually has every ballot in hand already, but the larger point is that everyone who has voted has already weighed in. We just don’t know it yet, and we won’t know the official final tally until the Hall’s announcement on January 21st.
However, the baseball writers who vote on the Hall are free to write about who they’re voting for basically at any point, and many of them have already been doing so.