DES MOINES, Iowa (AP) -

Libertarian presidential candidate Gary Johnson will be on the Iowa ballot in November.

Republican Secretary of State Matt Schultz, Democratic Attorney General Tom Miller, and Warren Jenkins, the chief deputy for Republican Auditor David Vaudt say Iowa's law on holding conventions to get on the ballot is vague and they chose to err on the side of open ballot access.

Johnson's candidacy was challenged last week by two Iowa voters. Jay Kramer, who works for Republican Mitt Romney's campaign, signed the documents as a witness.

Libertarians say they held a convention at the Iowa State Fair to get Johnson, a former Republican, onto Iowa's ballot.

The challenge says Libertarians didn't hold a real convention.

The panel says it will ask lawmakers to better define the convention process in state law.

(Copyright 2012 by The Associated Press. All Rights Reserved. This material may not be published, broadcast, rewritten or redistributed.)

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Libertarian candidate fights to get on Iowa ballot