Dyma restr o arolygon barn sydd yn ymwneud â Annibyniaeth i Gymru .
Gorymdaith dros annibyniaeth Merthyr, Medi 2019
Dyddiad
Trefnwr
Maint sampl
A ddylai Cymru fod yn wlad annibynnol?
Eithrio ddim yn gwybod
Arwain
Ie
Na
Di-benderfyniad
18 Hydref - 4 Tachwedd 2024
Survation
1,782
30%
51%
19%
37% i 63%
21%
2-8 Medi 2024
YouGov
1,207
24%
61%
15%
28% i 72%
37%
3-7 Mehefin 2024
Redfield & Wilton Strategies
960
33%
57%
10%
37% i 63%
24%
30 Mai-03 Mehefin 2024
YouGov
1066
24%
53%
14%
31% i 69%
29%
18-19 Mai 2024
Redfield & Wilton Strategies
900
29%
59%
12%
33% i 67%
30%
23-24 Mawrth 2024
Redfield & Wilton Strategies
878
30%
58%
11%
34% i 66%
32%
18 Chwefror 2024
Redfield & Wilton Strategies
874
27%
61%
12%
31% i 69%
34%
24-26 Ionawr 2024
Redfield & Wilton Strategies
1,100
30%
59%
11%
34% i 66%
29%
10-11 Rhagfyr 2023
Redfield & Wilton Strategies
1,086
34%
58%
9%
37% i 63%
24%
12-13 Tachwedd 2023
Redfield & Wilton Strategies
1,100
33%
56%
12%
37% i 63%
23%
1-6 Medi 2023
YouGov
22%
56%
13%
28% i 72%
34%
13-14 Awst 2023
Redfield & Wilton Strategies
1,068
33%
53%
14%
38% i 62%
20%
14–16 Gorffennaf 2023
Redfield & Wilton Strategies
1,050
32%
58%
10%
36% i 64%
26%
17–18 Mehefin 2023
Redfield & Wilton Strategies
1,000
30%
57%
13%
34% i 66%
27%
12–17 Mai 2023
YouGov/Barn Cymru
1,064
20%
54%
15%
27% i 73%
34%
14–15 Mai 2023
Redfield and Wilton Strategies
1,058
32%
58%
11%
36% i 64%
26%
15–17 Ebrill 2023
Redfield and Wilton Strategies
1,251
29%
60%
11%
33% i 67%
31%
17–23 Chwefror 2023
YouGov / WalesOnline
1,083
18%
55%
16%
25% i 75%
37%
25 Tachwedd – 1 Rhagfyr 2022
YouGov / Barn Cymru
1,042
22%
55%
14%
29% i 71%
33%
21-25 Tachwedd 2022
YouGov / YesCymru
1,033
23%
54%
13%
31%
20–22 Medi 2022
YouGov / Barn Cymru
1,014
24%
52%
14%
28%
16–19 Awst 2022
YouGov / The Sunday Times
1,025
25%
53%
12%
28%
12–16 Mehefin 2022
YouGov / ITV Wales
1,020
25%
50%
25%
25%
25 Chwefror – 1 Mawrth 2022
YouGov/ Barn Cymru
1,086
21%
53%
26%
32%
5 Mai 2021
Savanta ComRes Archifwyd 2022-02-16 yn y Peiriant Wayback
1,002
30%
55%
15%
25%
2-4 Mai 2021
YouGov / Welsh Barometer
1,071
21%
55%
14%
34%
29 Ebrill – 4 Mai 2021
Savanta ComRes Archifwyd 2022-02-16 yn y Peiriant Wayback
1,002
27%
58%
14%
31%
23–28 Ebrilll 2021
Savanta ComRes Archifwyd 2021-12-04 yn y Peiriant Wayback
1,002
42%
49%
8%
7%
18–21 Ebrill 2021
YouGov
1,142
22%
54%
24%
32%
9–19 Ebrill 2021
Opinium / Sky News
2,005
28%
52%
19%
24%
16–19 Mawrth 2021
Welsh Barometer Survey / YouGov
1,174
22%
55%
23%
33%
18–22 Chwefror 2021
Savanta ComRes / ITV News [dolen farw ]
1,003
35%
55%
10%
20%
19–22 Chwefror 2021
WalesOnline / YouGov
1,059
25%
50%
14%
25%
18–21 Ionawr 2021
The Sunday Times / YouGov
1,059
23%
52%
25%
29%
11–14 Ionawr 2021
Welsh Barometer Survey / YouGov
1,018
22%
53%
25%
29% i 71%
31%
26–29 Hydref 2020
Welsh Barometer Survey / YouGov
1,013
23%
53%
25%
30% i 70%
30%
24–27 Awst 2020
YesCymru / YouGov
1,044
25%
52%
23%
32% i 68%
27%
29 Gorffennaf – 7 Awst 2020
YesCymru / YouGov
1,044
26%
55%
19%
32% i 68%
29%
29 Mai – 1 Mehefin 2020
ITV Wales / YouGov / Cardiff Uni
1,021
25%
54%
21%
32% i 68%
29%
20–26 Ionawr 2020
Welsh Barometer Survey / YouGov
1,037
21%
57%
22%
27% i 73%
36%
6–9 Rhagfyr 2019
Welsh Barometer Survey / YouGov
1,020
17%
60%
23%
22% i 78%
43%
22–25 Tachwedd 2019
Welsh Barometer Survey / YouGov
1,116
20%
57%
22%
26% i 74%
37%
31 Hydref – 4 Tachwedd 2019
Welsh Barometer Survey / YouGov
1,032
22%
57%
21%
28% i 72%
35%
10–14 Hydref 2019
Welsh Barometer Survey / YouGov
1,032
21%
57%
23%
27% i 73%
36%
6–10 Medi 2019
Plaid Cymru / YouGov
1,039
24%
52%
23%
32% i 68%
28%
7–14 Rhagfyr 2018
Sky News Data: Wales
1,014
17%
67%
16%
20% i 80%
50%
30 May – 6 Mehefin 2018
YouGov
2,016
19%
65%
16%
23% i 77%
46%
Gorffennaf 2016
ITV Wales / YouGov Archifwyd 2020-08-14 yn y Peiriant Wayback
1,010
15%
65%
20%
19% i 81%
50%
8–11 Medi 2014
ITV Wales / YouGov / Cardiff University
>1,000
17%
70%
13%
20% i 80%
53%
Ebrill 2014
YouGov
1,000
12%
74%
14%
14% i 86%
62%
Dyddiad
Trefnwr
Maint sampl
A ddylai Cymru fod yn wlad annibynnol?
Eithrio ddim yn gwybod
Arwain
Nodiadau
Ie
Na
Di-benderfyniad
6–10 Medi 2019
Plaid Cymru / YouGov
1,039
33%
48%
20%
41% i 59%
15%
Os fyddai Cymru annibynnol yn aeold o'r Undeb Ewropeaidd
Gorffennaf 2016
ITV Wales / YouGov Archifwyd 2020-08-14 yn y Peiriant Wayback
1,010
28%
53%
20%
35% i 65%
25%
Os fyddai Cymru annibynnol yn aeold o'r Undeb Ewropeaidd
Gorffennaf 2016
ITV Wales / YouGov Archifwyd 2019-08-06 yn y Peiriant Wayback
1,010
19%
61%
21%
24% i 76%
42%
Os yw'r Alban yn gadel y DU
Mawrth 2013
ITV Wales / YouGov
Unknown
10%
62%
28%
14% i 86%
52%
Os yw'r Alban yn gadel y DU
Fe wnaeth arolwg barn garn Redfield and Wilton ofyn y cwestiwn canlynol ym mis Rhagfyr 2023, "Pe bai refferendwm yfory gyda’r cwestiwn canlynol, sut fyddech chi’n pleidleisio? A ddylai Cymru fod yn wlad annibynnol?". Mae'r ffigyrau yn cynnwys tebygolrywdd o bleidleisio ac yn eithrio "ddim yn gwybod".[ 1] [ 2] Addaswyd ffigyrau YouGov i i dynnu y rhai nad oddent yn gwybod.
Mai 2024[ 3]
16-24
25-34
35-44
45-54
55-64
65+
Ie
36%
52%
46%
37%
30%
18%
Na
64%
48%
54%
63%
70%
82%
Mawrth 2024[ 4]
16-24
25-34
35-44
45-54
55-64
65+
Ie
40%
44%
52%
29%
22%
29%
Na
60%
56%
48%
71%
78%
71%
Chwefror 2023[ 5]
16-24
25-34
35-44
45-54
55-64
65+
Ie
46%
42%
54%
22%
29%
13%
Na
54%
58%
46%
78%
71%
87%
Ionawr 2024[ 6]
16-24
25-34
35-44
45-54
55-64
65+
Ie
59%
53%
47%
29%
28%
16%
Na
41%
47%
53%
71%
72%
84%
Rhagfyr 2023[ 1]
16-24
25-34
35-44
45-54
55-64
65+
Ie
55%
59%
48%
27%
33%
21%
Na
45%
41%
52%
73%
67%
79%
Awst 2023[ 2]
18-24
25-34
35-44
45-54
55-64
65+
Ie
58%
60%
45%
28%
34%
29%
Na
42%
40%
55%
72%
66%
71%
Ebrill 2023[ 7]
16-17
18-24
25-34
35-44
45-54
55-64
65+
Ie
46%
42%
45%
44%
29%
24%
20%
Na
54%
58%
55%
56%
71%
76%
80%
Medi 2023[ 1]
16-24
25-49
50-64
65+
Ie
45%
33%
25%
19%
Na
55%
67%
75%
81%
Mai/Mehefin 2018[ 8]
18-24
25-49
50-64
65+
Ie
29%
31%
21%
17%
Na
71%
69%
79%
83%
Gofynnwyd i ymatebwyr roi sgôr o 0–10. 0–4 Yn erbyn, 5 difater, 6–10 O Blaid. Dileu "Ddim yn Gwybod".
Dyddiad
Cwmni
Sampl
Cyfanswm ffafriol
O blaid
Difater
Yn erbyn
Cyfanswm anffafriol
10
9
8
7
6
5
4
3
2
1
0
10–15 Mai 2019
YesCymru / YouGov
1,133
36%
14%
4%
5%
6%
7%
17%
5%
6%
6%
2%
28%
47%
9–12 Mai 2017
YesCymru / YouGov Archifwyd 2018-04-01 yn y Peiriant Wayback
1,000
29%
10%
2%
6%
6%
5%
18%
4%
6%
7%
5%
31%
53%
Dyddiad
Cwmni
Cefnogi annibyniaeth (%)
Cefnogi mwy o bwerau i'r Senedd (%)
Cefnogi status quo (%)
Cefnogi llai o bwerau i'r Senedd (%)
Cefnogi diddymu y Senedd (%)
Difater/dim ateb/Arall (%)
28 Ionawr – 21 Chwefror 2021[ 9]
BBC / ICM Unlimited
14
35
27
3
15
6
29 Mai – 1 Mehefin 2020[ 10]
ITV Cymru a Phrifysgol Caerdydd / YouGov
16
20
24
5
22
14
4–22 Chwefror 2020[ 11]
BBC / ICM
11
43
25
2
14
3
7–23 Chwefror 2019[ 12]
BBC / ICM
7
46
27
3
13
4
Rhagfyr 2018[ 13]
SkyData
8
40
23
4
18
7
Chwefror 2017 [ 14]
BBC / ICM
6
44
29
3
13
4
Chwefror 2016[ 15]
BBC / ICM
6
43
30
3
13
4
Chwefror 2015[ 16]
BBC / ICM
6
40
33
4
13
4
Medi 2014 [ 17]
BBC / ICM
3
49
26
2
12
6
Chwefror 2014 [ 18]
BBC / ICM
5
37
28
3
23
5
2013 [ 19]
BBC / ICM
9
36
28
2
20
4
2012 [ 19]
BBC / ICM
7
36
29
2
22
4
2011 [ 19]
BBC / ICM
11
35
18
17
15
4
2010 [ 19]
BBC / ICM
11
40
13
18
13
4
Dyddiad
Cwmni
Sampl
Annibyniaeth (gan gynnwys is-samplau)
Dim llywodraeth ddatganoledig (gan gynnwys is-samplau)
Difater / dim ateb (%)
Cyfanswm (%)
Ceidwadwyr (%)
Llafur (%)
Democratiaid Rhyddfrydol (%)
Plaid Cymru (%)
Cyfanswm (%)
Ceidwadwyr (%)
Llafur (%)
Democratiaid Rhyddfrydol (%)
Plaid Cymru (%)
29 Mai – 1 Mehefin 2020
ITV Cymru / YouGov / Prifysgol Caerdydd Archifwyd 2020-09-04 yn y Peiriant Wayback
1,021
33%
12%
45%
39%
87%
45%
79%
35%
53%
4%
21%
↑ 1.0 1.1 1.2 Strategies, Redfield & Wilton (2023-12-13). "Latest Welsh Westminster, Senedd & Independence Referendum Voting Intention (10-11 December 2023)" . Redfield & Wilton Strategies (yn Saesneg). Cyrchwyd 2023-12-13 .
↑ 2.0 2.1 Strategies, Redfield & Wilton (2023-08-16). "Welsh Westminster, Senedd & Independence Referendum Voting Intention (13-14 August 2023)" . Redfield & Wilton Strategies (yn Saesneg). Cyrchwyd 2023-12-13 .
↑ "Latest Welsh Westminster, Senedd & Independence Referendum Voting Intention (18-19 May 2024)" . Redfield & Wilton Strategies (yn Saesneg). 2024-05-22. Cyrchwyd 2024-05-22 .
↑ Strategies, Redfield & Wilton (2024-03-27). "Latest Welsh Westminster, Senedd & Independence Referendum Voting Intention (23-24 March 2024)" . Redfield & Wilton Strategies (yn Saesneg). Cyrchwyd 2024-03-28 .
↑ Strategies, Redfield & Wilton (2024-02-21). "Latest Welsh Westminster, Senedd & Independence Referendum Voting Intention (18 February 2024)" . Redfield & Wilton Strategies (yn Saesneg). Cyrchwyd 2024-03-28 .
↑ Strategies, Redfield & Wilton (2024-01-30). "Latest Welsh Westminster, Senedd & Independence Referendum Voting Intention (24-26 January 2024)" . Redfield & Wilton Strategies (yn Saesneg). Cyrchwyd 2024-01-30 .
↑ Strategies, Redfield & Wilton (2023-04-20). "Welsh Westminster, Senedd & Independence Referendum Voting Intention (15-17 April 2023)" . Redfield & Wilton Strategies (yn Saesneg). Cyrchwyd 2023-12-13 .
↑ "YouGov / Future of England Survey Results" (PDF) .
↑ "Voting attitudes and Senedd powers quizzed in poll for BBC Wales" . BBC News. 28 February 2021. Cyrchwyd 28 February 2021 .
↑ Awan-Scully, Roger (5 June 2020). "Attitudes to Devolution and Welsh Independence" . Cardiff University (yn Saesneg). Archifwyd o'r gwreiddiol ar 2020-09-04. Cyrchwyd 5 June 2020 .
↑ "St Davids Day Poll 2020" . 1 March 2020.
↑ "Attitudes to Brexit and economy polled" . BBC News . 1 March 2019.
↑ Awan-Scully, Roger (20 December 2018). "Does Wales Want to Abolish the Assembly?" . Cardiff University. Archifwyd o'r gwreiddiol ar 2021-05-15. Cyrchwyd 2023-01-09 .
↑ "EU migrants should have skills, public tells BBC Wales poll" . BBC News. 2017-03-01.
↑ "St David's Day Poll" (PDF) . blogs.cardiff.ac.uk . 1 March 2016. Cyrchwyd 2019-08-11 .
↑ "ICM Poll for the BBC" (PDF) . www.icmunlimited.com . 2016. Cyrchwyd 2019-08-11 .
↑ "' Record low' back Welsh independence - BBC/ICM poll" . Wales Online. 2014-09-15. Cyrchwyd 2014-09-19 .
↑ "BBC Cymru Wales poll: Few in Wales back Scottish independence" . BBC News. 28 February 2014. Cyrchwyd 6 April 2014 .
↑ 19.0 19.1 19.2 19.3 "Historical Polls" . icmunlimited . Cyrchwyd 2022-06-24 .
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