First, I hope that a polling-company isn't being hired to do this poll. If help is to be hired, then personally hire polling workers in the various regions.
But can't volunteers be gotten for polling?
Purpose of poll:
Trying out voting-systems, finding out how people will vote? Not so sure about that purpose.
With rankings, peolple will rank sincerely if its made clear that a virtually strategy-proof count method will be used.
It's already known that well-informed Approval voting usually elects the sincere CW. ...& that with our dishonest media & a public who believe them, voters tend to woefully over-compromise..
Likewise with Score.
So: There isn't much to find out about how people will vote.
Suggested purposes for poll:
1. Test accuracy of unverifiable official count-results:
Ask "If you voted in the Democrat primary, how did you vote?"
You know, until we have verifiable vote-counting, it makes no difference what voting-systems we use.
Someone wanting better voting-systems without verifiable vote-count is like someone wanting to build a house without buying any property.
2. Show people that there are more alternatives & offerings than they think, & that media-excluded choices have significant support.
So ask people to rank a broad range of candidates, of a broad range of parties.
"Rank, in order of preference, as many or as few candidates as you want to."
The official & primary rank-count should be the strategy-ptoof Benham or Woodall method. Assure voters that that there's no reason to not just rank sincerely.
Do IRV till there's an un-eliminated candidate who pair-beats all the other un-eljminated candidates. Elect hir.
(end of Benham definition)
Do IRV till only one member of the initially Smith-set remains un-eliminated. Elect hir
(end of Woodall definition)
(The Smith set is the smallest set of candidates who all pair-beat everyone outside the set.)
I suggest Benham, because of its briefer definition.
Of course Score or Approval could be substituted if they were all that could be feasibly balloted & counted.
You might choose to include Approval &/ or Score anyway, additionally.
But that makes more for respondents to do. Your choice, of course.
If you do, then give them the instruction. they should have in a real election:
"Mark the very best candidates--the ones you really like & fully trust."
"Give max rating to those you'd mark in Approval, & min rating to the others.
" Maybe give max minus 1 to some of the approval-set, & min plus 1 to some of the others.
"If a candidate's classification is uncertain, then give hir some appropriated seeming in between rating.
"...or just rate as a measure of how much you like the candididates (100 = best, 0 = worst)"