A different run indicates that some Electors can change their votes back to you if doing certain options that are still available and if their opinion of you is high enough. However, they are the sort of things that would make sense to enable a vote change even in the context of a denouncement essentially meaning the Elector won't vote for you. My specific example was Vkvy jnf qrabhaprq ohg gura jnf jvyyvat gb ibgr sbe zr svsgrra gheaf yngre jura V nterrq gb trg ratntrq gb Ynhsva. That certainly isn't something that would sneak up on a player and surprise them at the vote.
Please could you tell me how I get the history across to you, so you can see exactly what path I took to get to that state? I've tried saving the log but it doesn't appear to include the history, only the loading details.
I'm willing to send the save file itself, but am aware that copying saves between different people's installations is deprecated in current versions of Ren'Py for security reasons. I'm also willing to compose and send a document that documents what happened on a step-by-step basis (primarily that would be useful if you wanted to see the changes in popularity rating from the Imperial+ surveys I kept doing during the run, since neither the history nor the save file necessarily saves that in a convenient format for bug testing).