1.   So this survey might have to be done at the beginning of April.

2.   An ABC-TV survey had similar results.

3.   Both surveys had margins of sampling error of plus or minus four percentage points.

4.   Both surveys have flaws, underestimating inner-city users and high school dropouts.

5.   Both the March and October surveys had a margin of error of three percentage points.

6.   But the survey also had a political purpose.

7.   But unlike most polls, this survey has three parts.

8.   Clough acknowledged that academic surveys have their doubters but put it in some perspective.

9.   However, the survey does have separate regional rankings.

10.   How much political effect the new survey will have is open to debate.