Can a poll be tell us more than the sum?

I was thinking about who around here supports whom in the republican primary and came to the conclusion that a straight forward poll would be too muddled to see anything useful.

I wonder if there is a way to do a poll that the next question you receive would depend on the last answer you gave?

A simple two branch poll would suffice I think if all you wanted to see was the more conservative leaning answers versus the more liberal leaning answers? Is there a way to sift through a straight forward poll to get that info? I guess it's the totals, in sum, that would be muddled and not necessarily the poll, eh?

I think the bussed in libs ruined the republican primary in New Hampshire last time around by voting for our weakest (imo) candidate in McCain. I'm interested in which way the bussed in New Yorkers and Bostonians will try to throw it this time.