Two years on, it's kind of crazy that this stuff is still relevant, but...
Keller
Yes: 34%
No: 45%
Poll conducted June 14 - July 1st 2004
Hinterlaces
Yes: 40%
No: 51%
Poll conducted July 3 - July 18 2004
Evans McDonough
Yes: 41%
No: 49%
Poll conducted June 2004
Greenberg Quinlan Rosner Research Inc
Yes: 44%
No: 49%
Poll conducted June 2004
Indaga
Yes: 42%
No: 55%
Poll conducted June 2004
DATOS
Yes: 39%
No: 51%
Poll conducted June 2004
Consultores 21
Yes: 47%
No:53%
Tracking poll conducted through August 13, 2004
BUT:
Dantanalisis
Yes: 57%
No: 42%
Poll conducted May 10 and May 19
Seijas
Yes: 50%
No: 44%
Poll conducted July 2004.
Mercanalisis
Yes: 54%
No: 33%
Poll conducted May 20-June 5th
Consultores 21
Yes: 54%
No: 41%
Poll conducted June 2004
Source