Also, I'm expecting to see significant attempts at Voter Suppression.
This is now a major part of elections across the world: if you don't think people support what you're offering, just try to get the other parties' supporters not to vote.
The introduction of voter ID is the obvious one, but other techniques include spreading false information about how, when and where to vote. Text messages were used like this in the US.
Also, trying to dissuade people from voting, eg "they're all the same", "you can stick it to the man by not voting at all." Etc, etc. Obviously micro-targeting by Facebook or other algorithmic media very useful for this. Don't want your own voters to get the message not to vote!
There are usually last-minute drops of "revelations" ("Rishi ate my hamster", "Starmer is one of the lizardmen") intended to give people pause just long enough not to put their X on the ballot paper – no matter how untrue or irrelevant these turns out to be a week later.
It's going to be a horrible week for this sort of shit.