LITTLE ROCK, Ark. (AP) - A "special master" appointed by the Arkansas Supreme Court to review a ballot proposal to legalize casinos in three counties says Secretary of State Mark Martin was wrong when he certified a signature petition seeking the election and placed it on the November 8 general election ballot.

Last month, Martin's office said supporters of the proposed constitutional amendment had turned in enough signatures from registered voters to qualify for the ballot.

But in a report filed Monday, special master John Jennings says many signatures could be invalidated and there are problems with how some canvassers were identified in the petition.

The proposal would legalize casinos in Boone, Miller and Washington counties.

Robert Coon, a spokesman for Arkansas Wins, which supports the proposal, didn't immediately return a phone call seeking comment.

Martin's office declined to comment, citing that the issue is still under litigation.

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