| 9/3/96-11/4/96 | 9/5/00-11/6/00 | 9/7/04-11/1/04 | 9/2/08-11/3/08 | 9/8/12-11/5/12 |
| % | % | % | % | % |
Don’t know | 2.7 | 2.9 | 2.5 | 4.1 | 18.3 |
Democratic candidate | 47.4 | 40.6 | 41.9 | 50.3 | 43.9 |
Republican candidate | 28.1 | 32.3 | 39.6 | 26.1 | 28.6 |
Undecided | 3.9 | 3.3 | 3.6 | 5.1 | 2.5 |
Respondent does not intend to vote | 12.2 | 13.2 | 10.8 | 12.6 | 3.6 |
Other candidate | 5.8 | 6.8 | 1.6 | 1.8 | 3.1 |
N | 4518 | 4723 | 3149 | 6613 | 15,969 |