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| Date of survey | Sample size | Registered voters | Response rate |
| 5-9/9/04 | 3695 | 3695 | 74.7% |
| 7-9/9/04 | 2395 | 2395 | 74.1% |
| 4-8/9/04 | 3353 | 3353 | 75.2% |
| 6-8/9/04 | 2121 | 2121 | 74.6% |
| 3-7/9/04 | 3132 | 3132 | 75.1% |
| 5-7/9/04 | 1978 | 1978 | 75.7% |
| 2-6/9/04 | 2969 | 2969 | 75.1% |
| 4-6/9/04 | 1902 | 1902 | 75.8% |
| 1-5/9/04 | 2791 | 2791 | 75.3% |
| 3-5/9/04 | 1784 | 1784 | 75.1% |
| 31/8-4/9/04 | 2593 | 2593 | 74.5% |
| 2-4/9/04 | 1669 | 1669 | 74.5% |
| 30/8-3/9/04 | 2431 | 2431 | 74.3% |
| 1-3/9/04 | 1559 | 1559 | 74.6% |
| 29/8-2/9/04 | 2312 | 2312 | 74.7% |
| 31/8-2/9/04 | 1439 | 1439 | 74.6% |
| 28/8-1/9/04 | 2221 | 2221 | 74.0% |
| 30/8-1/9/04 | 1364 | 1364 | 74.6% |
| 27-31/8/04 | 2157 | 2157 | 73.8% |
| 29-31/8/04 | 1305 | 1305 | 73.9% |
| 26-30/8/04 | 2151 | 2151 | 73.8% |
| 28-30/8/04 | 1297 | 1297 | 73.7% |
| 25-29/8/04 | 2137 | 2137 | 73.9% |
| 27-29/8/04 | 1285 | 1285 | 73.9% |
| 24-28/8/04 | 2133 | 2133 | 73.5% |
| 26-28/8/04 | 1278 | 1278 | 73.1% |
| 23-27/8/04 | 2186 | 2186 | 74.1% |
| 25-27/8/04 | 1280 | 1280 | 74.5% |
| 22-26/8/04 | 2164 | 2164 | 73.7% |
| 24-26/8/04 | 1281 | 1281 | 73.4% |
| 21-25/8/04 | 2101 | 2101 | 74.0% |
| 23-25/8/04 | 1332 | 1332 | 74.3% |
| 20-24/8/04 | 2040 | 2040 | 73.6% |
| 22-24/8/04 | 1312 | 1312 | 73.5% |
| 19-23/8/04 | 1982 | 1982 | 73.8% |
| 21-23/8/04 | 1246 | 1246 | 74.0% |
| 18-22/8/04 | 1882 | 1882 | 73.6% |
| 20-22/8/04 | 1134 | 1134 | 73.7% |
| 17-21/8/04 | 1860 | 1860 | 73.4% |
| 19-21/8/04 | 1099 | 1099 | 73.6% |
| 16-20/8/04 | 1887 | 1887 | 73.4% |
| 18-20/8/04 | 1113 | 1113 | 73.6% |
| 15-19/8/04 | 1879 | 1879 | 73.5% |
| 17-19/8/04 | 1132 | 1132 | 73.0% |
| 14-18/8/04 | 1870 | 1870 | 74.1% |
| 16-18/8/04 | 1151 | 1151 | 73.4% |
| 13-17/8/04 | 1850 | 1850 | 73.5% |
| 15-17/8/04 | 1131 | 1131 | 73.6% |
| 12-16/8/04 | 1833 | 1833 | 73.5% |
| 14-16/8/04 | 1109 | 1109 | 74.7% |
| 11-15/8/04 | 1807 | 1807 | 73.8% |
| 13-15/8/04 | 1076 | 1076 | 73.8% |
| 10-14/8/04 | 1817 | 1817 | 73.9% |
| 12-14/8/04 | 1086 | 1086 | 72.9% |
| 9-13/8/04 | 1823 | 1823 | 73.6% |
| 11-13/8/04 | 1088 | 1088 | 73.0% |
| 8-12/8/04 | 1800 | 1800 | 74.1% |
| 10-12/8/04 | 1098 | 1098 | 74.2% |
| 7-11/8/04 | 1795 | 1795 | 74.5% |
| 9-11/8/04 | 1099 | 1099 | 75.0% |
| 6-10/8/04 | 1807 | 1807 | 74.6% |
| 8-10/8/04 | 1069 | 1069 | 74.4% |
| 5-9/8/04 | 1810 | 1810 | 74.0% |
| 7-9/8/04 | 1064 | 1064 | 73.9% |
| 4-8/8/04 | 1816 | 1816 | 73.1% |
| 6-8/8/04 | 1072 | 1072 | 74.5% |
| 5-7/8/04 | 1108 | 1108 | 73.9% |
| 4-6/8/04 | 1120 | 1120 | 72.7% |
| 26-29/7/04 | 1005 | 747 | 60.6% |
| 19-21/7/04 | 1031 | 795 | 63.8% |
| 9-11/7/04 | 1020 | 823 | 66.3% |
| 2-5/7/04 | 1026 | 824 | 63.0% |
| 24-27/6/04 | 1009 | 812 | 62.1% |
| 21-24/6/04 | 1023 | 795 | 63.9% |
| 7-11/6/04 | 1027 | 771 | 66.9% |
| 1-3/6/04 | 1025 | 817 | 62.1% |
| 24/5/04 | 532 | 446 | 68.4% |
| 18-20/5/04 | 1039 | 808 | 62.3% |
| 10-13/5/04 | 1021 | 797 | 61.9% |







