| The Election Petition Rules,1960 | 1960 No. 543 | Rules | amendment to earlier affecting provision S.I. 2007/236, Sch. 9 | The Senedd Cymru (Representation of the People) (Amendment) Order 2020 | 2020 No. 1558 | art. 65 | Not yet | |
| The National Assembly for Wales (Representation of the People) Order 2007 | 2007 No. 236 | art. 2(1) | words omitted | The Senedd Cymru (Representation of the People) (Amendment) Order 2020 | 2020 No. 1558 | art. 3(2) | Yes | |
| The National Assembly for Wales (Representation of the People) Order 2007 | 2007 No. 236 | art. 2(1) | words inserted | The Senedd Cymru (Representation of the People) (Amendment) Order 2020 | 2020 No. 1558 | art. 3(3) | Yes | |
| The National Assembly for Wales (Representation of the People) Order 2007 | 2007 No. 236 | art. 2(1) | words omitted | The Senedd Cymru (Representation of the People) (Amendment) Order 2020 | 2020 No. 1558 | art. 61(2) | Yes | |
| The National Assembly for Wales (Representation of the People) Order 2007 | 2007 No. 236 | art. 2(1) | words substituted | The Senedd Cymru (Representation of the People) (Amendment) Order 2020 | 2020 No. 1558 | art. 61(3) | Yes | |
| The National Assembly for Wales (Representation of the People) Order 2007 | 2007 No. 236 | art. 14(1) | words inserted | The Senedd Cymru (Representation of the People) (Amendment) Order 2020 | 2020 No. 1558 | art. 36 | Yes | |
| The National Assembly for Wales (Representation of the People) Order 2007 | 2007 No. 236 | art. 23(1) | substituted | The Senedd Cymru (Representation of the People) (Amendment) Order 2020 | 2020 No. 1558 | art. 53(2) | Yes | |
| The National Assembly for Wales (Representation of the People) Order 2007 | 2007 No. 236 | art. 23(1A)-(1D) | inserted | The Senedd Cymru (Representation of the People) (Amendment) Order 2020 | 2020 No. 1558 | art. 53(3) | Yes | |
| The National Assembly for Wales (Representation of the People) Order 2007 | 2007 No. 236 | art. 23(2) | word substituted | The Senedd Cymru (Representation of the People) (Amendment) Order 2020 | 2020 No. 1558 | art. 53(4) | Yes | |
| The National Assembly for Wales (Representation of the People) Order 2007 | 2007 No. 236 | art. 23(3) | words substituted | The Senedd Cymru (Representation of the People) (Amendment) Order 2020 | 2020 No. 1558 | art. 53(5)(a) | Yes | |
| The National Assembly for Wales (Representation of the People) Order 2007 | 2007 No. 236 | art. 23(3) | words substituted | The Senedd Cymru (Representation of the People) (Amendment) Order 2020 | 2020 No. 1558 | art. 53(5)(b) | Yes | |
| The National Assembly for Wales (Representation of the People) Order 2007 | 2007 No. 236 | art. 23(5) | word substituted | The Senedd Cymru (Representation of the People) (Amendment) Order 2020 | 2020 No. 1558 | art. 53(6) | Yes | |
| The National Assembly for Wales (Representation of the People) Order 2007 | 2007 No. 236 | art. 23(6) | word substituted | The Senedd Cymru (Representation of the People) (Amendment) Order 2020 | 2020 No. 1558 | art. 53(7)(a) | Yes | |
| The National Assembly for Wales (Representation of the People) Order 2007 | 2007 No. 236 | art. 23(6) | words substituted | The Senedd Cymru (Representation of the People) (Amendment) Order 2020 | 2020 No. 1558 | art. 53(7)(b) | Yes | |
| The National Assembly for Wales (Representation of the People) Order 2007 | 2007 No. 236 | art. 23(7) | words substituted | The Senedd Cymru (Representation of the People) (Amendment) Order 2020 | 2020 No. 1558 | art. 53(8)(a) | Yes | |
| The National Assembly for Wales (Representation of the People) Order 2007 | 2007 No. 236 | art. 23(7) | words substituted | The Senedd Cymru (Representation of the People) (Amendment) Order 2020 | 2020 No. 1558 | art. 53(8)(b) | Yes | |
| The National Assembly for Wales (Representation of the People) Order 2007 | 2007 No. 236 | art. 23(8) | words substituted | The Senedd Cymru (Representation of the People) (Amendment) Order 2020 | 2020 No. 1558 | art. 53(9)(a) | Yes | |
| The National Assembly for Wales (Representation of the People) Order 2007 | 2007 No. 236 | art. 23(8) | words substituted | The Senedd Cymru (Representation of the People) (Amendment) Order 2020 | 2020 No. 1558 | art. 53(9)(b) | Yes | |
| The National Assembly for Wales (Representation of the People) Order 2007 | 2007 No. 236 | art. 23(9) | words substituted | The Senedd Cymru (Representation of the People) (Amendment) Order 2020 | 2020 No. 1558 | art. 53(10) | Yes | |
| The National Assembly for Wales (Representation of the People) Order 2007 | 2007 No. 236 | art. 23(10) | words substituted | The Senedd Cymru (Representation of the People) (Amendment) Order 2020 | 2020 No. 1558 | art. 53(11) | Yes | |
| The National Assembly for Wales (Representation of the People) Order 2007 | 2007 No. 236 | art. 23(11) | words omitted | The Senedd Cymru (Representation of the People) (Amendment) Order 2020 | 2020 No. 1558 | art. 53(12)(a) | Yes | |
| The National Assembly for Wales (Representation of the People) Order 2007 | 2007 No. 236 | art. 23(11) | words omitted | The Senedd Cymru (Representation of the People) (Amendment) Order 2020 | 2020 No. 1558 | art. 53(12)(b) | Yes | |
| The National Assembly for Wales (Representation of the People) Order 2007 | 2007 No. 236 | art. 34(5) | words inserted | The Senedd Cymru (Representation of the People) (Amendment) Order 2020 | 2020 No. 1558 | art. 43(b) | Yes | |
| The National Assembly for Wales (Representation of the People) Order 2007 | 2007 No. 236 | art. 34(5)(a) | omitted | The Senedd Cymru (Representation of the People) (Amendment) Order 2020 | 2020 No. 1558 | art. 43(a) | Yes | |
| The National Assembly for Wales (Representation of the People) Order 2007 | 2007 No. 236 | art. 34(5)(b) | omitted | The Senedd Cymru (Representation of the People) (Amendment) Order 2020 | 2020 No. 1558 | art. 43(a) | Yes | |
| The National Assembly for Wales (Representation of the People) Order 2007 | 2007 No. 236 | art. 34(5)(c) | omitted | The Senedd Cymru (Representation of the People) (Amendment) Order 2020 | 2020 No. 1558 | art. 43(a) | Yes | |
| The National Assembly for Wales (Representation of the People) Order 2007 | 2007 No. 236 | art. 37(9) | words inserted | The Senedd Cymru (Representation of the People) (Amendment) Order 2020 | 2020 No. 1558 | art. 45(2) | Yes | |
| The National Assembly for Wales (Representation of the People) Order 2007 | 2007 No. 236 | art. 37(10) | inserted | The Senedd Cymru (Representation of the People) (Amendment) Order 2020 | 2020 No. 1558 | art. 45(3) | Yes | |
| The National Assembly for Wales (Representation of the People) Order 2007 | 2007 No. 236 | art. 63(8) | omitted | The Senedd Cymru (Representation of the People) (Amendment) Order 2020 | 2020 No. 1558 | art. 54 | Yes | |
| The National Assembly for Wales (Representation of the People) Order 2007 | 2007 No. 236 | art. 137(2) | omitted | The Senedd Cymru (Representation of the People) (Amendment) Order 2020 | 2020 No. 1558 | art. 62 | Yes | |
| The National Assembly for Wales (Representation of the People) Order 2007 | 2007 No. 236 | art. 149 | omitted | The Senedd Cymru (Representation of the People) (Amendment) Order 2020 | 2020 No. 1558 | art. 63 | Yes | |
| The National Assembly for Wales (Representation of the People) Order 2007 | 2007 No. 236 | Sch. 1 para. 1(9)(c) | word omitted | The Senedd Cymru (Representation of the People) (Amendment) Order 2020 | 2020 No. 1558 | art. 37(2)(a) | Yes | |
| The National Assembly for Wales (Representation of the People) Order 2007 | 2007 No. 236 | Sch. 1 para. 1(9)(d) | punctuation mark omitted | The Senedd Cymru (Representation of the People) (Amendment) Order 2020 | 2020 No. 1558 | art. 37(2)(b) | Yes | |
| The National Assembly for Wales (Representation of the People) Order 2007 | 2007 No. 236 | Sch. 1 para. 1(9)(d) | word inserted | The Senedd Cymru (Representation of the People) (Amendment) Order 2020 | 2020 No. 1558 | art. 37(2)(b) | Yes | |
| The National Assembly for Wales (Representation of the People) Order 2007 | 2007 No. 236 | Sch. 1 para. 1(9)(e) | inserted | The Senedd Cymru (Representation of the People) (Amendment) Order 2020 | 2020 No. 1558 | art. 37(2)(c) | Yes | |
| The National Assembly for Wales (Representation of the People) Order 2007 | 2007 No. 236 | Sch. 1 para. 5(2)(a)(i) | word substituted | The Senedd Cymru (Representation of the People) (Amendment) Order 2020 | 2020 No. 1558 | art. 37(3) | Yes | |
| The National Assembly for Wales (Representation of the People) Order 2007 | 2007 No. 236 | Sch. 1 para. 5(4)(a) | word substituted | The Senedd Cymru (Representation of the People) (Amendment) Order 2020 | 2020 No. 1558 | art. 37(4) | Yes | |
| The National Assembly for Wales (Representation of the People) Order 2007 | 2007 No. 236 | Sch. 1 para. 6A(4)(b)(i) | word substituted | The Senedd Cymru (Representation of the People) (Amendment) Order 2020 | 2020 No. 1558 | art. 37(5) | Yes | |
| The National Assembly for Wales (Representation of the People) Order 2007 | 2007 No. 236 | Sch. 1 para. 6A(6)(b)(ii) | word substituted | The Senedd Cymru (Representation of the People) (Amendment) Order 2020 | 2020 No. 1558 | art. 37(6) | Yes | |
| The National Assembly for Wales (Representation of the People) Order 2007 | 2007 No. 236 | Sch. 1 para. 14A | inserted | The Senedd Cymru (Representation of the People) (Amendment) Order 2020 | 2020 No. 1558 | art. 37(7) | Yes | |
| The National Assembly for Wales (Representation of the People) Order 2007 | 2007 No. 236 | Sch. 5 rule 41(1)(b) | word substituted | The Senedd Cymru (Representation of the People) (Amendment) Order 2020 | 2020 No. 1558 | art. 38(a) | Yes | |
| The National Assembly for Wales (Representation of the People) Order 2007 | 2007 No. 236 | Sch. 5 rule 41(2) | word substituted | The Senedd Cymru (Representation of the People) (Amendment) Order 2020 | 2020 No. 1558 | art. 38(b) | Yes | |
| The National Assembly for Wales (Representation of the People) Order 2007 | 2007 No. 236 | Sch. 5 rule 48(3)(b) | word substituted | The Senedd Cymru (Representation of the People) (Amendment) Order 2020 | 2020 No. 1558 | art. 38(c) | Yes | |
| The National Assembly for Wales (Representation of the People) Order 2007 | 2007 No. 236 | Sch. 5 rule 9(4)(c)(i) | omitted | The Senedd Cymru (Representation of the People) (Amendment) Order 2020 | 2020 No. 1558 | art. 44(2)(a)(i) | Yes | |
| The National Assembly for Wales (Representation of the People) Order 2007 | 2007 No. 236 | Sch. 5 rule 9(4)(c)(ii) | omitted | The Senedd Cymru (Representation of the People) (Amendment) Order 2020 | 2020 No. 1558 | art. 44(2)(a)(i) | Yes | |
| The National Assembly for Wales (Representation of the People) Order 2007 | 2007 No. 236 | Sch. 5 rule 9(4)(c) | words inserted | The Senedd Cymru (Representation of the People) (Amendment) Order 2020 | 2020 No. 1558 | art. 44(2)(a)(ii) | Yes | |
| The National Assembly for Wales (Representation of the People) Order 2007 | 2007 No. 236 | Sch. 5 rule 9(7) | omitted | The Senedd Cymru (Representation of the People) (Amendment) Order 2020 | 2020 No. 1558 | art. 44(2)(b) | Yes | |
| The National Assembly for Wales (Representation of the People) Order 2007 | 2007 No. 236 | Sch. 5 rule 13(2)(c) | words substituted | The Senedd Cymru (Representation of the People) (Amendment) Order 2020 | 2020 No. 1558 | art. 44(3)(a)(i) | Yes | |
| The National Assembly for Wales (Representation of the People) Order 2007 | 2007 No. 236 | Sch. 5 rule 13(2)(d) | words substituted | The Senedd Cymru (Representation of the People) (Amendment) Order 2020 | 2020 No. 1558 | art. 44(3)(a)(ii) | Yes | |
| The National Assembly for Wales (Representation of the People) Order 2007 | 2007 No. 236 | Sch. 5 rule 13(2)(e) | words substituted | The Senedd Cymru (Representation of the People) (Amendment) Order 2020 | 2020 No. 1558 | art. 44(3)(a)(iii) | Yes | |