[kelnos]

It's incredibly naive to think that a tool like poll tests will only be used in the narrow way you personally would like them to be used.

No matter what kind of voter you particularly would like to target, the people administering the poll tests will (ab)use them to disenfranchise whomever they please.

Even if you believe the people in power who administer your elections would do this the "right" way, if you give them power, then the next people who come along -- who you may not agree with -- will also have that power.