Reply #2: Can I just get this clear:?

[Febble]

As I understand it: your target is the two vote percentages, and your constrained variables are the mean category WPEs from the E-M report and the mean completion rates (presumably responders/(responders+refusals+misses). You allow vote percentages to vary within the range for each category.

Tell me if I've got this wrong.

And two questions:

Is your output a series of paired completion rates for Kerry voters and Bush voters, one pair for each category?

And can you tell me where the category numbers (number of precincts in each category) fit in to the model?