PHOENIX – Republican legislative leaders are entitled to challenge the heart of a voter-approved measure designed to shine a light on “dark money’’ in Arizona politics, the state Supreme Court ruled.

In a divided ruling, five of the justices acknowledged that it was voters in 2022 who approved Proposition 211, using their constitutional power to create their own laws when the legislature does not act. And the justices said another voter-approved constitutional measure bars lawmakers from repealing what has been approved at the ballot.

But Justice Clint Bolick, writing for the majority, said none of that means voters were entitled to give the Citizens Clean Elections Commission, which administers Prop 211, blanket authority to enact rules to make the system work and, more to the point, ma

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