Unfortunately, I think they won't do that. They'll probably never vote again, let alone bother with politics.
They've simply written off politicians as liars and charlatans and they see no point in writing to them: they feel that whatever they do, the politicians will do as they please with no care for them and their families. This was psy-ops and manipulation on a massive and very well funded scale.
I wish I could tell them they're wrong.
Will you tell them they're wrong and truly believe it?