Unofficial returns
100% reporting
| Choice | Votes | Pct. |
|---|---|---|
| Yes | 6,911,493 | 67.0% |
| No | 3,401,969 | 33.0% |
100% reporting
| Choice | Votes | Pct. |
|---|---|---|
| Yes | 3,366,326 | 32.9% |
| No | 6,859,964 | 67.1% |
100% reporting
| Choice | Votes | Pct. |
|---|---|---|
| Yes | 1,821,460 | 17.6% |
| No | 8,511,873 | 82.4% |
100% reporting
| Choice | Votes | Pct. |
|---|---|---|
| Yes | 6,655,397 | 64.4% |
| No | 3,674,299 | 35.6% |
100% reporting
| Choice | Votes | Pct. |
|---|---|---|
| Yes | 3,235,291 | 31.6% |
| No | 6,993,649 | 68.4% |
100% reporting
| Choice | Votes | Pct. |
|---|---|---|
| Yes | 4,376,798 | 42.3% |
| No | 5,964,373 | 57.7% |
100% reporting
| Choice | Votes | Pct. |
|---|---|---|
| Yes | 6,553,813 | 63.6% |
| No | 3,751,332 | 36.4% |