I think the solution there, apart from local knowledge and local contact, is offering a range of voting options. For those electors who are vulnerable, those electors who either have COVID or are at risk of having COVID because of where they are and who they've interacted with, it's to reinforce the importance of alternative voting options, such as mail-in ballots.
We have messages to reinforce that, to make sure that electors have a range of options to vote in a way that is safe.