DD took this in Y10.
Amazon sell this, which she used:
Pearson REVISE Edexcel GCSE Citizenship Revision Guide and Workbook Incl. online revision - for 2025 and 2026 exams
Otherwise, a general understanding of how elections and democracy works in the UK is a really big one.
Make sure he can explain different voting systems - First Past The Post etc, and a lot of it seemed to be reading articles and being able to formulate arguments around them so a broad view of major news stories and contentious issues - should 16 year olds vote, is immigration a positive or negative, is 'Right to Die' a positive or negative, is social media a good thing etc. And focus on being able to see both sides of an argument and show that while taking a position.
Making flash cards is probably the other most useful strategy - all the different voting system, things like who can vote in different election and who can't (Members of the House of Lords can't vote in general elections for example, EU citizens in UK can vote in locals but not generals, Maltese citizens can vote in generals though. All those weird combos).
It's a really interesting GCSE.
DD is very SEN and her revision skills are distinctly ropey and she came out with a high 6 with only 1 lesson a week in Y9 and 2 a week in Y10, so don't panic.