Il dato definitivo Comune per Comune
Elezioni Europee: alle 23 l’affluenza definitiva a Siena e provincia è del 69,69%
| SIENA | 35 su 35 | 20,47 | 20,11 | 55,98 | 53,21 | 69,69 | 71,42 |
| ABBADIA SAN SALVATORE | 22,30 | 22,92 | 62,21 | 61,64 | 73,78 | 77,01 | |
| ASCIANO | 19,90 | 19,83 | 57,63 | 54,03 | 71,29 | 73,98 | |
| BUONCONVENTO | 22,78 | 24,39 | 63,34 | 57,65 | 76,72 | 76,05 | |
| CASOLE D’ELSA | 22,93 | 23,84 | 58,08 | 59,45 | 73,26 | 78,83 | |
| CASTELLINA IN CHIANTI | 23,34 | 22,21 | 58,15 | 58,27 | 73,97 | 73,67 | |
| CASTELNUOVO BERARDENGA | 20,41 | 19,91 | 55,03 | 52,26 | 69,32 | 71,75 | |
| CASTIGLIONE D’ORCIA | 17,54 | 21,37 | 55,86 | 58,10 | 67,78 | 75,06 | |
| CETONA | 23,93 | 17,47 | 59,38 | 53,78 | 73,76 | 72,96 | |
| CHIANCIANO TERME | 21,41 | 22,90 | 58,93 | 58,02 | 70,52 | 74,11 | |
| CHIUSDINO | 21,34 | 21,36 | 60,29 | 57,42 | 71,72 | 74,34 | |
| CHIUSI | 16,23 | 16,82 | 51,57 | 52,28 | 64,81 | 70,58 | |
| COLLE DI VAL D’ELSA | 19,36 | 19,96 | 57,52 | 55,15 | 73,22 | 75,65 | |
| GAIOLE IN CHIANTI | 28,07 | 24,44 | 65,93 | 63,42 | 77,93 | 76,20 | |
| MONTALCINO | 16,62 | 17,19 | 45,66 | 44,45 | 60,31 | 62,08 | |
| MONTEPULCIANO | 18,62 | 17,66 | 54,92 | 52,38 | 68,95 | 72,01 | |
| MONTERIGGIONI | 20,62 | 18,76 | 58,32 | 53,47 | 73,75 | 73,71 | |
| MONTERONI D’ARBIA | 21,11 | 22,91 | 56,63 | 57,11 | 72,27 | 77,13 | |
| MONTICIANO | 19,13 | 17,11 | 48,12 | 56,98 | 58,94 | 63,19 | |
| MURLO | 27,19 | 23,80 | 66,59 | 59,93 | 81,63 | 78,55 | |
| PIANCASTAGNAIO | 30,54 | 20,13 | 69,40 | 62,41 | 80,51 | 79,70 | |
| PIENZA | 27,33 | 28,17 | 68,47 | 66,15 | 82,46 | 83,42 | |
| POGGIBONSI | 20,88 | 20,51 | 57,97 | 54,18 | 72,56 | 73,93 | |
| RADDA IN CHIANTI | 20,54 | 23,73 | 57,33 | 54,01 | 71,00 | 73,32 | |
| RADICOFANI | 24,09 | 21,69 | 70,96 | 67,99 | 84,16 | 83,21 | |
| RADICONDOLI | 30,09 | 24,93 | 75,66 | 62,81 | 83,48 | 78,65 | |
| RAPOLANO TERME | 21,23 | 20,17 | 56,40 | 48,06 | 71,22 | 70,54 | |
| SAN CASCIANO DEI BAGNI | 25,25 | 22,84 | 66,05 | 57,72 | 78,29 | 75,78 | |
| SAN GIMIGNANO | 24,29 | 21,43 | 60,54 | 54,52 | 74,49 | 76,26 | |
| SAN QUIRICO D’ORCIA | 23,27 | 22,17 | 62,69 | 59,67 | 77,03 | 76,65 | |
| SARTEANO | 16,75 | 16,34 | 50,35 | 47,61 | 62,68 | 64,58 | |
| SIENA | 19,49 | 19,60 | 50,30 | 48,11 | 62,82 | 63,33 | |
| SINALUNGA | 18,39 | 18,22 | 53,74 | 50,98 | 67,07 | 69,63 | |
| SOVICILLE | 20,50 | 20,85 | 54,90 | 51,55 | 68,85 | 71,28 | |
| TORRITA DI SIENA | 20,07 | 19,53 | 59,53 | 53,36 | 73,87 | 73,57 | |
| TREQUANDA | 17,73 | 16,55 | 53,10 | 52,65 | 65,12 | 71,51 |
